Do You Think Daily Contacts Are Wasteful?

Anthanxan · #1 (**permalink**) 01-09-2008, 11:30 AM

This isn't so much a question for me as much as a kind of informal opinion poll. I know everyone's got an opinion, so go ahead and chime in.
I heard someone say that daily contact lenses are "wasteful." He thinks it's a waste to buy a pair of contact lenses, wear them once, and throw them away. A lot of people think it's a fair price to pay if they don't have to clean their contact lenses.
I'd like to open the floor, as it were, to some opinions. What do you think, Lens 101 reader? Do you wear daily contacts or do you find them wasteful?

HelpMeRhonda · #2 (**permalink**) 01-17-2008, 12:43 PM

My vote would be no, they are not wasteful. Wearing daily disposable contact lenses means not worrying about cleaning them every night and still having the peace of mind that each morning you have fresh, clean contact lenses. You also save money by not buying all those cleaning products.

Jmatte · #3 (**permalink**) 02-01-2008, 12:35 PM

The one true benefit of daily disposable lenses is their one time use and being able to wear a brand new pair the next day. This helps eliminate protein build up from occurring along with and residue from soap, dirt etc. Not having to worry about cleaning the lenses in order to better prevent any eye infections seems to be a pretty sound reason to wear daily disposable contact lenses.

ken7700 · #4 (**permalink**) 05-15-2008, 11:15 PM

I think they are great. Many people wear contacts as they do not have to clean them and wearing glasses is something many people hate. I guess though it is an individual choice.

skatss · #5 (**permalink**) 05-16-2008, 01:38 PM

Knowing me I would probably try to wear them at least two days before I get rid of them. That probably wouldn't be good for my eyes but I know how I am. Maybe I would do this because I do feel it's wasteful to wear contacts only once. I know the price is good but still, I would think that I was losing money if I only wore them once.

Columbia · #6 (**permalink**) 08-17-2009, 10:03 AM

Quote:

Originally Posted by skatss

Knowing me I would probably try to wear them at least two days before I get rid of them. That probably wouldn't be good for my eyes but I know how I am. Maybe I would do this because I do feel it's wasteful to wear contacts only once. I know the price is good but still, I would think that I was losing money if I only wore them once.

Skatss, according to the count here on your post, this is just one of about 250 posts you've put up here on Lens 101. I'm surprised that in all that time you've spent here that you haven't learn that wearing daily disposable contacts for more than one day can be dangerous. If you're that concerned about "losing money" by wearing daily disposables only once, you should probably try monthly or even vial contacts, which can last for a year if you care for them properly.

kyles414 · #7 (**permalink**) 08-19-2009, 10:39 PM

I just want to know, what is your reason for wearing contact lenses? If it helps you on your daily activity then, I guess these are not wasteful.

In my opinion, we should not only think of the money that we spend on contact lenses but also the benefit that we get from using it.

Anthanxan · #8 (**permalink**) 08-20-2009, 10:57 AM

Quote:

Originally Posted by kyles414

In my opinion, we should not only think of the money that we spend on contact lenses but also the benefit that we get from using it.

You make a very good point, Kyles. A bargain is no bargain if you're buying something you can't use. Who wants a good price on poison ivy or a big, stinking pile of garbage?

Judging from the responses in this thread, most people enjoy the benefits of wearing daily disposable contact lenses.

Beny · #9 (**permalink**) 08-28-2009, 09:04 AM

Ya i am sure that daily contact lenses are waste product...while compared to the monthly disposable lens ... because monthly disposable lens are economical than daily disposable one...and the daily disposable lenses are very difficult to handle...

Rock · #10 (**permalink**) 08-28-2009, 10:21 AM

Quote:

Originally Posted by Beny

Ya i am sure that daily contact lenses are waste product...while compared to the monthly disposable lens ... because monthly disposable lens are economical than daily disposable one...and the daily disposable lenses are very difficult to handle...

I agree with you..i used both types .. but monthly disposable lenses are twice the cost of the daily disposable one ....

Teddikitty · #11 (**permalink**) 08-28-2009, 03:38 PM

Quote:

Originally Posted by Rock

I agree with you..i used both types .. but monthly disposable lenses are twice the cost of the daily disposable one ....

I haven't looked at any prices lately, but are you sure you're looking at them correctly? Does a moth's supply of monthly disposables cost twice as much a month's supply of daily?

Monthly contacts usually come six in a box--enough to last for 90 days, while dailies typically come 30 to a box, which will last 15 days if you wear a pair every day. Only one sixth as long.

So if you're comparing the cost of one box of monthlies to what one box of dailies cost, your calculations are going to be a bit off.

Columbia · #12 (**permalink**) 11-18-2009, 01:26 PM

Quote:

Originally Posted by Beny

Ya i am sure that daily contact lenses are waste product...while compared to the monthly disposable lens ... because monthly disposable lens are economical than daily disposable one...and the daily disposable lenses are very difficult to handle...

What do you mean, Beny? How are monthly disposable lenses more economical than daily disposable? You're probably right about the thicker monthly disposable contacts being easier to handle than the thin dailies, but I'm missing your other point.

Anthanxan · #13 (**permalink**) 02-01-2010, 11:13 AM

Quote:

Originally Posted by Jmatte

The one true benefit of daily disposable lenses is their one time use and being able to wear a brand new pair the next day. This helps eliminate protein build up from occurring along with and residue from soap, dirt etc. Not having to worry about cleaning the lenses in order to better prevent any eye infections seems to be a pretty sound reason to wear daily disposable contact lenses.

You make a very good point about protein buildup. Thank you for your contribution. I appreciate hearing from you.

Anthanxan · #14 (**permalink**) 02-01-2010, 11:16 AM

Quote:

Originally Posted by ken7700

I think they are great. Many people wear contacts as they do not have to clean them and wearing glasses is something many people hate. I guess though it is an individual choice.

Some good points, Ken. No cleaning lenses and no wearing glasses. Thank you.

HelpMeRhonda · #15 (**permalink**) 02-04-2010, 02:38 PM

Quote:

Originally Posted by Anthanxan

You make a very good point, Kyles. A bargain is no bargain if you're buying something you can't use. Who wants a good price on poison ivy or a big, stinking pile of garbage?

Ewwww. Way to make a point, Anthanxan.

Teddikitty · #16 (**permalink**) 02-22-2010, 02:51 PM

Quote:

Originally Posted by Jmatte

The one true benefit of daily disposable lenses is their one time use and being able to wear a brand new pair the next day. This helps eliminate protein build up from occurring along with and residue from soap, dirt etc. Not having to worry about cleaning the lenses in order to better prevent any eye infections seems to be a pretty sound reason to wear daily disposable contact lenses.

The daily disposables protect you from protein and residue buildup, sure, but do you find the daily disposable contacts to be cost-effective as well?

HelpMeRhonda · #17 (**permalink**) 03-30-2010, 10:39 AM

Quote:

Originally Posted by Teddikitty

The daily disposables protect you from protein and residue buildup, sure, but do you find the daily disposable contacts to be cost-effective as well?

Let's choose some contacts at random from Lens 101.

Daily
SofLens Daily Disposable
Price per box (45 day supply): $45.95

1-2 Week
SofLens 59
Price per box: (42 day supply maximum) $14.95

Monthly
Optima 38
Price per box: 39.95 (30 day supply)
$59.93 (45 day supply)

Unless my math is wrong, it would seem that the most cost-effective way to go would be 1-2 week lenses such as Soflens 59.

Check my figures. For prices go to www.lens.com.

Did I get it right?

Knotlob · #18 (**permalink**) 03-30-2010, 02:05 PM

Quote:

Originally Posted by HelpMeRhonda

Let's choose some contacts at random from Lens 101.

Daily
SofLens Daily Disposable
Price per box (45 day supply): $45.95

1-2 Week
SofLens 59
Price per box: (42 day supply maximum) $14.95

Monthly
Optima 38
Price per box: 39.95 (30 day supply)
$59.93 (45 day supply)

Unless my math is wrong, it would seem that the most cost-effective way to go would be 1-2 week lenses such as Soflens 59.

Check my figures. For prices go to www.lens.com.

Did I get it right?

Even better value in the UK where LensBase.co.uk classifies the B&L Soflens59 as a monthly lens (rather than a two week lens).

knotlob

321contacts · #19 (**permalink**) 03-30-2010, 03:33 PM

Quote:

Originally Posted by Knotlob

Even better value in the UK where LensBase.co.uk classifies the B&L Soflens59 as a monthly lens (rather than a two week lens).

knotlob

Really? How can that be? The material doesn't change when you ship it overseas, does it?

Knotlob · #20 (**permalink**) 03-31-2010, 05:54 AM

Quote:

Originally Posted by 321contacts

Really? How can that be? The material doesn't change when you ship it overseas, does it?

No, but there have been previous threads here, where the same lens has a different life (weekly, 2 weekly, monthly, etc.) as specified by the manufacturer. Typically in developing countries like India and China, the lens may be rated as a longer life lens. Presumably due partially on what the manufacturers think the market will support and partly the higher risk of litigation in locations such as the USA.

knotlob

gsshop · #21 (**permalink**) 04-14-2010, 10:50 PM

yes, i think it's a little wasteful. i wear contact lens not often so i buy month disposalble. i just wear them when i need to attend a formal party maybe just once every month

timetraveler · #22 (**permalink**) 04-16-2010, 02:53 PM

Quote:

Originally Posted by skumar

This is the fantastic question, first of all it is not a waste product.
Wearing daily disposable contact lenses means not worrying about cleaning them every night and still having the peace of mind that each morning you have fresh, clean contact lenses. You also save money by not buying all those cleaning products.

That reply sounds very familiar. You're not trying to copy and paste someone else's answer and make it look like your own, are you?

Teddikitty · #23 (**permalink**) 04-22-2010, 04:00 PM

Quote:

Originally Posted by Knotlob

No, but there have been previous threads here, where the same lens has a different life (weekly, 2 weekly, monthly, etc.) as specified by the manufacturer. Typically in developing countries like India and China, the lens may be rated as a longer life lens. Presumably due partially on what the manufacturers think the market will support and partly the higher risk of litigation in locations such as the USA.

knotlob

Yes, we don't want to get involved in litigation here in the States. Don't let the attorneys bite.

warmheart · #24 (**permalink**) 05-05-2010, 09:53 PM

all depend on your needs. if you can afford it i believe Daily Disposable is a better choice because it's more convenient and safe

Knotlob · #25 (**permalink**) 05-06-2010, 05:26 AM

Quote:

Originally Posted by warmheart

all depend on your needs. if you can afford it i believe Daily Disposable is a better choice because it's more convenient and safe

But most Daily Disposable lenses are low oxygen permeability (Low Dk value). Therefore, some people will benefit more from high Dk, silicone hydrogel weekly or monthly disposables.

knotlob

PeriBrown · #26 (**permalink**) 05-06-2010, 11:04 AM

Quote:

Originally Posted by Knotlob

But most Daily Disposable lenses are low oxygen permeability (Low Dk value).
knotlob

That's a good reason not to wear them for more than one day.

Knotlob · #27 (**permalink**) 05-06-2010, 12:08 PM

Quote:

Originally Posted by PeriBrown

That's a good reason not to wear them for more than one day.

No, the low Dk value is a good reason not to wear the lenses more than 10-12 hours/day (or as advised by your eye care professional).

I don't think low Dk values on their own should affect how many days you can wear a disposable contact lens - other factors are probably more important.
e.g. I used to wear yearly Hydron/CooperVision Omniflex lenses Dk 30, but there are Daily Disposables with Dk values of that order also.

Of course you should follow your optician's guidance, who will in turn be guided by the manufacturer (one day for Daily Disposables in this case).

knotlob

Privateyez · #28 (**permalink**) 05-06-2010, 02:23 PM

Quote:

Originally Posted by Knotlob

No, the low Dk value is a good reason not to wear the lenses more than 10-12 hours/day (or as advised by your eye care professional).

I don't think low Dk values on their own should affect how many days you can wear a disposable contact lens - other factors are probably more important.
e.g. I used to wear yearly Hydron/CooperVision Omniflex lenses Dk 30, but there are Daily Disposables with Dk values of that order also.

Of course you should follow your optician's guidance, who will in turn be guided by the manufacturer (one day for Daily Disposables in this case).

knotlob

So if someone (like me) were to ask you "what's the biggest reason I can't wear daily disposable contact lenses once I go to bed?" what would your answer be?

Knotlob · #29 (**permalink**) 05-06-2010, 02:44 PM

Quote:

Originally Posted by Privateyez

So if someone (like me) were to ask you "what's the biggest reason I can't wear daily disposable contact lenses once I go to bed?" what would your answer be?

I've answered this before on the forum but don't remember where.

Basically, most Daily Disposables have low oxygen permeability (Dk 18-30 say). Modern silicone hydrogel lenses tend to be Dk 100-140. The J&J 1 Day Acuvue TruEye is a recent exception to the Daily Disposable lenses.

The cornea has no blood vessels, but is living tissue so must be fed with oxygen somehow. Normally this is directly from the air in front of the cornea and the tear film, which carries some oxygen. If you wear a contact lens, then it is more difficult for oxygen to flow to the cornea through the lens and proportionately more oxygen must be supplied via the tear film. So, the contact lens must fit properly for the tear film to pump properly. Even so, it is likely with very low Dk lenses, the eye will not have enough oxygen.

Some people complain that the Daily Disposable lenses become dry and difficult to remove if worn too long. If it is dry, the tear film will also be compromised, which will hinder oxygen flow to the cornea via the tear pump.

At night, the eyelid is closed and even without contact lenses, the eye suffers a deficiency of oxygen. It does receive oxygen from the capillaries in the back of the eye lid, but not quite enough and overnight the eye will swell to some extent. With low Dk lenses, this lack of oxygen supply to the eye overnight is much more extreme as the lenses act as a barrier to oxygen flow.

The eye will compensate for a lack of oxygen to the cornea by creating new capillaries which grow into the cornea to supply oxygen there. Trouble is that the cornea needs to be clear and free of capillaries to give sharp clear vision. This capillary growth is called neovascularisation. Even if you switch to a higher Dk lens after developing this neovascularisation, the capillaries will drain of blood but will remain as ghost capillaries. These don't seem to go away.

In addition, wearing lenses overnight or 24/7, even if your eye care professional agrees, is not the most healthy thing for your eyes. It increases the risk of corneal infections & ulcers (even if the lenses are silicone hydrogel) and worse if you are also a smoker.

knotlob

Privateyez · #30 (**permalink**) 05-06-2010, 03:03 PM

Quote:

Originally Posted by Knotlob

I've answered this before on the forum but don't remember where.

Basically, most Daily Disposables have low oxygen permeability (Dk 18-30 say). Modern silicone hydrogel lenses tend to be Dk 100-140. The J&J 1 Day Acuvue TruEye is a recent exception to the Daily Disposable lenses.

The cornea has no blood vessels, but is living tissue so must be fed with oxygen somehow. Normally this is directly from the air in front of the cornea and the tear film, which carries some oxygen. If you wear a contact lens, then it is more difficult for oxygen to flow to the cornea through the lens and proportionately more oxygen must be supplied via the tear film. So, the contact lens must fit properly for the tear film to pump properly. Even so, it is likely with very low Dk lenses, the eye will not have enough oxygen.

Some people complain that the Daily Disposable lenses become dry and difficult to remove if worn too long. If it is dry, the tear film will also be compromised, which will hinder oxygen flow to the cornea via the tear pump.

At night, the eyelid is closed and even without contact lenses, the eye suffers a deficiency of oxygen. It does receive oxygen from the capillaries in the back of the eye lid, but not quite enough and overnight the eye will swell to some extent. With low Dk lenses, this lack of oxygen supply to the eye overnight is much more extreme as the lenses act as a barrier to oxygen flow.

The eye will compensate for a lack of oxygen to the cornea by creating new capillaries which grow into the cornea to supply oxygen there. Trouble is that the cornea needs to be clear and free of capillaries to give sharp clear vision. This capillary growth is called neovascularisation. Even if you switch to a higher Dk lens after developing this neovascularisation, the capillaries will drain of blood but will remain as ghost capillaries. These don't seem to go away.

In addition, wearing lenses overnight or 24/7, even if your eye care professional agrees, is not the most healthy thing for your eyes. It increases the risk of corneal infections & ulcers (even if the lenses are silicone hydrogel) and worse if you are also a smoker.

knotlob

Thank you for answering so fast, knotlob.
It seems like it doesn't happen as often as before, but once in a while I still see posts where people claim that it's okay to wear daily disposables for two days or longer. Perhaps they found your previous post on this subject meaningful.

That or they're just not admitting it.

Knotlob · #31 (**permalink**) 05-06-2010, 03:31 PM

Quote:

Originally Posted by Privateyez

Thank you for answering so fast, knotlob.
It seems like it doesn't happen as often as before, but once in a while I still see posts where people claim that it's okay to wear daily disposables for two days or longer. Perhaps they found your previous post on this subject meaningful.

That or they're just not admitting it.

Hopefully some of the posts here warning people against contact lens abuse don't fall on deaf ears - or should that be falling on blind eyes?

I do differentiate between wearing a low Dk value lens too many hours/day, or indeed overnight and the other form of 'contact lens abuse' - wearing a (Daily/Two Weekly/Monthly) Disposable lens beyond it's manufacturer's stated life.

In my view, wearing a low Dk lens for too many hours/day is far more serious. I have yet to be given a sound scientific reason why a disposable contact lens has a fixed number of day's life - other than because the manufacturer told me so. That is the problem with dumbing down of the information available on the Internet.

I hasten to add that I don't and I don't suggest anyone else wears a contact lens beyond it's lifetime as specified by the manufacturer.

knotlob

FitnessMistress · #32 (**permalink**) 05-06-2010, 04:28 PM

Quote:

Originally Posted by Knotlob

Hopefully some of the posts here warning people against contact lens abuse don't fall on deaf ears - or should that be falling on blind eyes?

I do differentiate between wearing a low Dk value lens too many hours/day, or indeed overnight and the other form of 'contact lens abuse' - wearing a (Daily/Two Weekly/Monthly) Disposable lens beyond it's manufacturer's stated life.

In my view, wearing a low Dk lens for too many hours/day is far more serious. I have yet to be given a sound scientific reason why a disposable contact lens has a fixed number of day's life - other than because the manufacturer told me so. That is the problem with dumbing down of the information available on the Internet.

I hasten to add that I don't and I don't suggest anyone else wears a contact lens beyond it's lifetime as specified by the manufacturer.

knotlob

Thanks for that explanation, knotlob. Maybe someone else can explain the limitations of daily and monthly contacts.

I don't suppose it's the materials they're made of, is it? Are daily lenses made from different stuff that the monthly, weekly and vial contacts? Is each kind different from all the others?

Knotlob · #33 (**permalink**) 05-06-2010, 06:25 PM

Quote:

Originally Posted by FitnessMistress

Thanks for that explanation, knotlob. Maybe someone else can explain the limitations of daily and monthly contacts.

I don't suppose it's the materials they're made of, is it? Are daily lenses made from different stuff that the monthly, weekly and vial contacts? Is each kind different from all the others?

Normally it's different. But in the case of Bausch & Lomb SofLens Daily and Bausch & Lomb SofLens59 (monthly) they are both made of Hilafilcon B. So why one should be rated as Daily Disposable, while the other is rated as a Monthly is a mystery.

knotlob

PeriBrown · #34 (**permalink**) 05-10-2010, 12:59 PM

Quote:

Originally Posted by Knotlob

Normally it's different. But in the case of Bausch & Lomb SofLens Daily and Bausch & Lomb SofLens59 (monthly) they are both made of Hilafilcon B. So why one should be rated as Daily Disposable, while the other is rated as a Monthly is a mystery.

knotlob

According to Lens.com, Soflens Daily Disposables are made of "41% Polymer (hilafilcon B)" while SofLens 59 are made of "41% Polymer (hilafilcon A)."

What's the difference between A and B?

Knotlob · #35 (**permalink**) 05-10-2010, 04:19 PM

Quote:

Originally Posted by PeriBrown

According to Lens.com, Soflens Daily Disposables are made of "41% Polymer (hilafilcon B)" while SofLens 59 are made of "41% Polymer (hilafilcon A)."

What's the difference between A and B?

Lens.com is wrong

.

The Bausch & Lomb US website states both the SofLens Daily and SofLens59 are made of Hilafilcon B.

http://www.bausch.com/en_US/consumer/visioncare/product/softcontacts/soflens_cat_con.aspx

See packaging insert info for each lens.

knotlob

Ynot · #36 (**permalink**) 05-10-2010, 05:05 PM

Quote:

Originally Posted by Knotlob

Lens.com is wrong

.

The Bausch & Lomb US website states both the SofLens Daily and SofLens59 are made of Hilafilcon B.

http://www.bausch.com/en_US/consumer/visioncare/product/softcontacts/soflens_cat_con.aspx

See packaging insert info for each lens.

knotlob

Hear that Webmasters and Webmistresses?

It looks like that package insert is in PDF format, and if you don't have Adobe Reader installed on your computer, I don't think you'll be able to read it. Do you know if this information can be found anyplace else?

Knotlob · #37 (**permalink**) 05-10-2010, 05:29 PM

Quote:

Originally Posted by Ynot

Hear that Webmasters and Webmistresses?

It looks like that package insert is in PDF format, and if you don't have Adobe Reader installed on your computer, I don't think you'll be able to read it. Do you know if this information can be found anyplace else?

Adobe PDF reader is a free to install bit of software. Unless your computer is a works one with Admin privileges withheld, it's just a matter of downloading and installing.

A lot of Internet files are now in PDF format.

knotlob

Banditcat · #38 (**permalink**) 05-10-2010, 05:30 PM

Quote:

Originally Posted by Knotlob

Normally it's different. But in the case of Bausch & Lomb SofLens Daily and Bausch & Lomb SofLens59 (monthly) they are both made of Hilafilcon B. So why one should be rated as Daily Disposable, while the other is rated as a Monthly is a mystery.

knotlob

I read this and I thought I'd go to the B & L websites and investigate, Scooby-Doo-like. I found a nifty little chart that listed the parameters of B & L contact lenses. I though the chart for SofLens Daily would be the same as the one for SofLens 59. Here's what I found. Note the highlights.

SofLens Daily

Parameters
Material: hilafilcon B
Water Content: 59%
FDA Material Group: II
Oxygen Transmission (Dk/t): 24.0 @ -3.00D
Manufacturing Method: Cast-molded
Base Curve: 8.6 mm
Diameter: 14.2mm
Powers: +6.50D to -9.00D
(0.25D steps, 0.50D steps
above -6.50D)
Optical Zone: 9.0 mm @ (-3.00D)
Center Thickness: 0.09 mm @ (-3.00D)
Visibility Tint: Light blue
Design: Posterior geometry – central spherical zone with tangential peripheral bevel zone
Package Size: 90-pack

SofLens 59

Parameters
Material: hilafilcon B
Water content: 59%
FDA Material Group: II
Oxygen Permeability (Dk): 22
Manufacturing Method: cast-molding process
Base Curves: 8.6 equivalent base curve
Diameter: 14.2mm
Powers: -0.50D to -6.00D in .25D steps -6.50D to -9.00D in .50D steps
+0.50D to +6.00D in .25D steps
Center Thickness: 0.14mm (@-3.00D)
Visibility Tint: Light Blue

So here's the score:
Soflens 1-Day
Material: hilafilcon B
Water Content: 59%
Dk: 24.0 @ -3.00D
Center Thickness: 0.09 mm @ (-3.00D)

SofLens 59
Material: hilafilcon B
Water Content: 59%
Dk: 22
Center Thickness: 0.14mm (@-3.00D)

Same material, same water content, slightly different Dk, and slightly different center thickness. Those differences could explain why one is a daily lens and the other is a monthly one.

Couldn't they??

Knotlob · #39 (**permalink**) 05-10-2010, 05:43 PM

Quote:

Originally Posted by Banditcat

I read this and I thought I'd go to the B & L websites and investigate, Scooby-Doo-like. I found a nifty little chart that listed the parameters of B & L contact lenses. I though the chart for SofLens Daily would be the same as the one for SofLens 59. Here's what I found. Note the highlights.

SofLens Daily

Parameters
Material: hilafilcon B
Water Content: 59%
FDA Material Group: II
Oxygen Transmission (Dk/t): 24.0 @ -3.00D
Manufacturing Method: Cast-molded
Base Curve: 8.6 mm
Diameter: 14.2mm
Powers: +6.50D to -9.00D
(0.25D steps, 0.50D steps
above -6.50D)
Optical Zone: 9.0 mm @ (-3.00D)
Center Thickness: 0.09 mm @ (-3.00D)
Visibility Tint: Light blue
Design: Posterior geometry – central spherical zone with tangential peripheral bevel zone
Package Size: 90-pack

SofLens 59

Parameters
Material: hilafilcon B
Water content: 59%
FDA Material Group: II
Oxygen Permeability (Dk): 22
Manufacturing Method: cast-molding process
Base Curves: 8.6 equivalent base curve
Diameter: 14.2mm
Powers: -0.50D to -6.00D in .25D steps -6.50D to -9.00D in .50D steps
+0.50D to +6.00D in .25D steps
Center Thickness: 0.14mm (@-3.00D)
Visibility Tint: Light Blue

So here's the score: Soflens 1-Day SofLens 59

Material: hilafilcon B hilafilcon B
Water Content: 59% 59%
Dk: 24.0 @ -3.00D 22
Center Thickness: 0.09 mm @ (-3.00D) 0.14mm (@-3.00D)

Same material, same water content, slightly different Dk, and slightly different center thickness. Those differences could explain why one is a daily lens and the other is a monthly one.

Couldn't they??

You are confusing Dk and Dk/t. They are not the same. Dk for both lenses is the same - it is the same material and is Dk 22.

The Dk/t (Daily SofLens) is 24.

The Dk/t for the thicker Soflens59 is 16 (according to my calculation)

So, the Daily Soflens is a more oxygen breathable lens than the SofLens59.

Perhaps B&L have made the SofLen59 thicker to be more robust as you say. However, I tested the SofLens Daily and with careful handling would easily last a month.

knotlob

Bonkers · #40 (**permalink**) 05-11-2010, 05:51 PM

Quote:

Originally Posted by Teddikitty

Yes, we don't want to get involved in litigation here in the States. Don't let the attorneys bite.

It's the lawyers! Run!

321contacts · #41 (**permalink**) 05-25-2010, 05:49 PM

Quote:

Originally Posted by Knotlob

You are confusing Dk and Dk/t. They are not the same.

knotlob

I hope you haven't already answered this question ten times, but what is the difference between Dk and Dk/t? The "t" stands for "thickness," right?

Knotlob · #42 (**permalink**) 05-25-2010, 06:44 PM

Quote:

Originally Posted by 321contacts

I hope you haven't already answered this question ten times, but what is the difference between Dk and Dk/t? The "t" stands for "thickness," right?

Yes, t is the thickness.

Dk is a measure of the oxygen permeability of the lens material (not the actual lens).

Dk/t is a measure of the oxygen transmissibilty of the lens (usually measured on a -3.00D lens). It depends on what thickness the lens is in the centre. A thin lens will have a greater oxygen transmissibility than a thicker lens.

A yearly lens would probably be thicker to withstand the handling and if made of the same material as a daily disposable lens, would normally have a lower oxygen transmissibility than the Daily disposable lens.

knotlob

Juicer · #43 (**permalink**) 05-26-2010, 10:43 AM

Quote:

Originally Posted by Knotlob

Yes, t is the thickness.

Dk is a measure of the oxygen permeability of the lens material (not the actual lens).

Dk/t is a measure of the oxygen transmissibilty of the lens (usually measured on a -3.00D lens). It depends on what thickness the lens is in the centre. A thin lens will have a greater oxygen transmissibility than a thicker lens.

A yearly lens would probably be thicker to withstand the handling and if made of the same material as a daily disposable lens, would normally have a lower oxygen transmissibility than the Daily disposable lens.

knotlob

That's a very helpful answer, knotlob, thank you.

So let me see if I've got this straight. To speak of "Dk" is to speak of how well oxygen diffuses (If that's the right verb.) through a given material, regardless of its application, while "Dk/t" refers to the oxygen diffusion through a contact lens specifically, right?

Privateyez · #44 (**permalink**) 05-26-2010, 11:43 AM

Quote:

Originally Posted by Knotlob

Hopefully some of the posts here warning people against contact lens abuse don't fall on deaf ears - or should that be falling on blind eyes?

I do differentiate between wearing a low Dk value lens too many hours/day, or indeed overnight and the other form of 'contact lens abuse' - wearing a (Daily/Two Weekly/Monthly) Disposable lens beyond it's manufacturer's stated life.

In my view, wearing a low Dk lens for too many hours/day is far more serious. I have yet to be given a sound scientific reason why a disposable contact lens has a fixed number of day's life - other than because the manufacturer told me so. That is the problem with dumbing down of the information available on the Internet.

I hasten to add that I don't and I don't suggest anyone else wears a contact lens beyond it's lifetime as specified by the manufacturer.

knotlob

I always thought it was because contact lenses get covered in deposits or degrade in some way that makes them unhealthy to wear, and that different materials degrade at different rates. The ones that wear out the soonest are the daily disposable contacts and the more resistant ones can be worn longer. Am I mistaken?

Knotlob · #45 (**permalink**) 05-26-2010, 01:57 PM

Quote:

Originally Posted by Privateyez

I always thought it was because contact lenses get covered in deposits or degrade in some way that makes them unhealthy to wear, and that different materials degrade at different rates. The ones that wear out the soonest are the daily disposable contacts and the more resistant ones can be worn longer. Am I mistaken?

But Bausch & Lomb make a SofLens Daily and a monthly Soflens 59. Both are made of the same material, hilafilcon B. The monthly lens is a little thicker than the daily.

knotlob

Jesterhester · #46 (**permalink**) 05-26-2010, 02:35 PM

Quote:

Originally Posted by Knotlob

But Bausch & Lomb make a SofLens Daily and a monthly Soflens 59. Both are made of the same material, hilafilcon B. The monthly lens is a little thicker than the daily.

knotlob

You're right, knotlob. According to Lens.com (Which gets it right sometimes.

) both are made of 41% hilafilcon B. Can simply making a daily disposable lens a little thicker make it a monthly disposable lens? Just like that?

Knotlob · #47 (**permalink**) 05-26-2010, 03:16 PM

Quote:

Originally Posted by Jesterhester

You're right, knotlob. According to Lens.com (Which gets it right sometimes.

) both are made of 41% hilafilcon B. Can simply making a daily disposable lens a little thicker make it a monthly disposable lens? Just like that?

Well, I have (in the interests of science) worn a pair of SofLens Daily Disposables for a number of weeks (taking them out at night and sterilising them of course) and they lasted quite a long time before boredom set in and I binned them. I don't wear Daily Disposable lenses, so it was just an academic exercise.

The monthly lens would normally be thicker (if they used the same lens material) in order to handle the increase wear and tear from handling and cleaning. A thicker (monthly) lens would also be a bit less oxygen transmissible.

Eye Care Professionals generally prefer a Daily Disposable lens because there is then no real issue of deposit accumulations. Some people can only wear a Daily Disposable because of severe protein/lipid deposits. Personally I am fortunate I don't seem to have this problem and indeed used to wear yearly lenses.

So, I think in some cases a 2 weekly lens could be worn for 4 weeks (if you take the O2 Optix/Air Optix saga as an example). However, you really should be following you eye care professional's judgement and advice as they know your eyes.

knotlob

321contacts · #48 (**permalink**) 07-13-2010, 05:52 PM

Quote:

Originally Posted by Knotlob

Yes, t is the thickness.

Dk is a measure of the oxygen permeability of the lens material (not the actual lens).

Dk/t is a measure of the oxygen transmissibilty of the lens (usually measured on a -3.00D lens). It depends on what thickness the lens is in the centre. A thin lens will have a greater oxygen transmissibility than a thicker lens.

A yearly lens would probably be thicker to withstand the handling and if made of the same material as a daily disposable lens, would normally have a lower oxygen transmissibility than the Daily disposable lens.

knotlob

Okay, cool. Thanks for explaining that, knotlob.

HelpMeRhonda · #49 (**permalink**) 07-21-2010, 05:51 PM

Quote:

Originally Posted by Knotlob

Even better value in the UK where LensBase.co.uk classifies the B&L Soflens59 as a monthly lens (rather than a two week lens).

knotlob

But my math is correct though, right?

Knotlob · #50 (**permalink**) 07-21-2010, 06:36 PM

Quote:

Originally Posted by HelpMeRhonda

But my math is correct though, right?

Yes HelpMeRhonda, your maths looks OK

knotlob

Hypnoteyes · #51 (**permalink**) 07-22-2010, 12:17 PM

Quote:

Originally Posted by HelpMeRhonda

Let's choose some contacts at random from Lens 101.

Daily
SofLens Daily Disposable
Price per box (45 day supply): $45.95

1-2 Week
SofLens 59
Price per box: (42 day supply maximum) $14.95

Monthly
Optima 38
Price per box: 39.95 (30 day supply)
$59.93 (45 day supply)

Unless my math is wrong, it would seem that the most cost-effective way to go would be 1-2 week lenses such as Soflens 59.

Check my figures. For prices go to www.lens.com.

Did I get it right?

Looks good to me, too.

Bonkers · #52 (**permalink**) 08-20-2010, 05:56 PM

Quote:

Originally Posted by Knotlob

Well, I have (in the interests of science) worn a pair of SofLens Daily Disposables for a number of weeks (taking them out at night and sterilising them of course) and they lasted quite a long time before boredom set in and I binned them. I don't wear Daily Disposable lenses, so it was just an academic exercise.

The monthly lens would normally be thicker (if they used the same lens material) in order to handle the increase wear and tear from handling and cleaning. A thicker (monthly) lens would also be a bit less oxygen transmissible.

Eye Care Professionals generally prefer a Daily Disposable lens because there is then no real issue of deposit accumulations. Some people can only wear a Daily Disposable because of severe protein/lipid deposits. Personally I am fortunate I don't seem to have this problem and indeed used to wear yearly lenses.

So, I think in some cases a 2 weekly lens could be worn for 4 weeks (if you take the O2 Optix/Air Optix saga as an example). However, you really should be following you eye care professional's judgement and advice as they know your eyes.

knotlob

Were you "following you eye care professional's judgment and advice" when you wore the SofLens Daily Disposables for a number of weeks?

Knotlob · #53 (**permalink**) 08-20-2010, 06:09 PM

Quote:

Originally Posted by Bonkers

Were you "following you eye care professional's judgment and advice" when you wore the SofLens Daily Disposables for a number of weeks?

No, I was applying some common sense and 35 years contact lens wear experience, plus a lot of careful research into the lenses prior to trying this. It was not a spur of the moment decision!

There were no ill effects, but as I don't personally favour daily disposable contacts, I terminated the experiment (out of boredom) and returned to Annual lenses. Since then, I have switched to Biofinity and then to RGP lenses.

knotlob

Eyerobot · #54 (**permalink**) 08-23-2010, 04:41 PM

Quote:

Originally Posted by Knotlob

No, I was applying some common sense and 35 years contact lens wear experience, plus a lot of careful research into the lenses prior to trying this. It was not a spur of the moment decision!

There were no ill effects, but as I don't personally favour daily disposable contacts, I terminated the experiment (out of boredom) and returned to Annual lenses. Since then, I have switched to Biofinity and then to RGP lenses.

knotlob

So you know what happens next, right? People will start reading this thread and skip all the research and just start wearing their SofLens Daily Disposable contacts for a number of weeks instead of one day. That's why stuntmen tell the viewing audience "don't try this at home."

How do you feel about Lens 101 readers trying this at home? Are you okay with that? It makes me a bit uneasy, myself.

Knotlob · #55 (**permalink**) 08-25-2010, 06:50 AM

Quote:

Originally Posted by Eyerobot

So you know what happens next, right? People will start reading this thread and skip all the research and just start wearing their SofLens Daily Disposable contacts for a number of weeks instead of one day. That's why stuntmen tell the viewing audience "don't try this at home."

How do you feel about Lens 101 readers trying this at home? Are you okay with that? It makes me a bit uneasy, myself.

I have already explained this situation Ad nauseam in previous posts on this particular subject and why forum members should not try this themselves. As I said, it was done after a lot of careful thought.

It doesn't matter how much I tell people they should consult their doctor or should not wear contact lenses on a 24/7 extended Wear Basis, etc. etc. There will always be some who ignore that advice.

I merely posted my experience - I didn't suggest anyone should do the same! It was to demonstrate that in certain very limited circumstances, a Daily Contact lens may be wearable for longer than that advised by the manufacturer. In this particular case, the Daily lens was made of the same material as the Monthly lens in that manufacturer's product range, but the Monthly lens was slightly thicker. So in theory, the Daily lens, being thinner, would have a higher Dk/t oxygen permeability than the alternative monthly lens. The mechanical integrity of the daily lens would of course not be as good as the Monthly lens, but with careful handing, longer life was possible.

I don't wear Daily Disposable contact lenses and only purchased these as an emergency replacement while on holiday. I have tried samples of Daily Disposables given to me by various opticians, but for me there is no justification in wearing Daily Disposables as opposed to a higher Dk/t and cost effective overall, modern silicone hydrogel lens.

Very few manufacturers actually use the same material in their Daily Disposables as they do in their Monthly lenses, so this particular situation was fairly unique.

knotlob

Wookiee74 · #56 (**permalink**) 08-25-2010, 11:45 AM

Quote:

Originally Posted by Knotlob

I have already explained this situation Ad nauseam in previous posts on this particular subject and why forum members should not try this themselves. As I said, it was done after a lot of careful thought.

It doesn't matter how much I tell people they should consult their doctor or should not wear contact lenses on a 24/7 extended Wear Basis, etc. etc. There will always be some who ignore that advice.

I merely posted my experience - I didn't suggest anyone should do the same! It was to demonstrate that in certain very limited circumstances, a Daily Contact lens may be wearable for longer than that advised by the manufacturer. In this particular case, the Daily lens was made of the same material as the Monthly lens in that manufacturer's product range, but the Monthly lens was slightly thicker. So in theory, the Daily lens, being thinner, would have a higher Dk/t oxygen permeability than the alternative monthly lens. The mechanical integrity of the daily lens would of course not be as good as the Monthly lens, but with careful handing, longer life was possible.

I don't wear Daily Disposable contact lenses and only purchased these as an emergency replacement while on holiday. I have tried samples of Daily Disposables given to me by various opticians, but for me there is no justification in wearing Daily Disposables as opposed to a higher Dk/t and cost effective overall, modern silicone hydrogel lens.

Very few manufacturers actually use the same material in their Daily Disposables as they do in their Monthly lenses, so this particular situation was fairly unique.

knotlob

I suppose, since this forum has gotten so big, that every time you make a statement about wearing daily disposables for more than one day you will have to explain yourself. Unfortunately a lot of people--myself included sometimes--just respond to a post like this rather than checking to see what else has been said first.

If it happens again, perhaps you can just put up a link to your previous statement and say "I've already explained this here: [link url].

Knotlob · #57 (**permalink**) 08-25-2010, 12:24 PM

Quote:

Originally Posted by Wookiee74

I suppose, since this forum has gotten so big, that every time you make a statement about wearing daily disposables for more than one day you will have to explain yourself. Unfortunately a lot of people--myself included sometimes--just respond to a post like this rather than checking to see what else has been said first.

If it happens again, perhaps you can just put up a link to your previous statement and say "I've already explained this here: [link url].

Fair point, if I can find it, but many people don't seem to even want to follow links, even within the same forum and want the whole lot cut and pasted AGAIN

.

knotlob

Goliath2001 · #58 (**permalink**) 08-25-2010, 02:29 PM

Quote:

Originally Posted by Knotlob

Fair point, if I can find it, but many people don't seem to even want to follow links, even within the same forum and want the whole lot cut and pasted AGAIN

.

knotlob

I know what you mean, knotlob. Myself, I don't mind following a link to another thread here in this forum, but when someone wants me to leave my cozy home at Lens 101, I hesitate.

Speaking of cozy . . . ladies, a picture for you. Prepare to sigh.

discountlens · #59 (**permalink**) 09-10-2010, 01:25 AM

daily contacts are not wasteful..they have many advantages like
# they are convenient
# no cleaning is required so no more expenses on Contact lenses cleaning solutions
#day-to-day buildup on your contact lenses is reduced.
#they minimize the risks of getting scratches all over..scratches can affect your vision, even cause more eye problems in some cases.
so daily contact lens are better..

Knotlob · #60 (**permalink**) 09-10-2010, 05:51 AM

Quote:

Originally Posted by discountlens

daily contacts are not wasteful..they have many advantages like
# they are convenient
# no cleaning is required so no more expenses on Contact lenses cleaning solutions
#day-to-day buildup on your contact lenses is reduced.
#they minimize the risks of getting scratches all over..scratches can affect your vision, even cause more eye problems in some cases.
so daily contact lens are better..

They are better for some people - those who have heavy protein secretions in their tears or who won't or can't clean their lenses at the end of each day. They have advantages when travelling also.

But they are a lot more expensive than monthly disposable lenses (even with solutions).

knotlob

nakedeyes · #61 (**permalink**) 09-10-2010, 11:04 AM

Quote:

Originally Posted by Knotlob

They are better for some people - those who have heavy protein secretions in their tears or who won't or can't clean their lenses at the end of each day. They have advantages when traveling also.

But they are a lot more expensive than monthly disposable lenses (even with solutions).

knotlob

That about sums it up, doesn't it?

Hypnoteyes · #62 (**permalink**) 09-10-2010, 12:54 PM

Quote:

Originally Posted by discountlens

daily contacts are not wasteful..they have many advantages like
# they are convenient
# no cleaning is required so no more expenses on Contact lenses cleaning solutions
#day-to-day buildup on your contact lenses is reduced.
#they minimize the risks of getting scratches all over..scratches can affect your vision, even cause more eye problems in some cases.
so daily contact lens are better..

Thanks for the bulleted list, discountlens. Although, come to think of it, those are pound signs. So would that be a "pounded list?"

Teddikitty · #63 (**permalink**) 09-10-2010, 02:25 PM

Quote:

Originally Posted by Hypnoteyes

Thanks for the bulleted list, discountlens. Although, come to think of it, those are pound signs. So would that be a "pounded list?"

Yes I'd call it a "pounded list" too.
Discountlens counted "they minimize the risks of getting scratches all over" as one of the benefits of daily disposable lenses. Just how easily to extended wear lenses scratch?

Knotlob · #64 (**permalink**) 09-10-2010, 05:16 PM

Quote:

Originally Posted by Teddikitty

Yes I'd call it a "pounded list" too.
Discountlens counted "they minimize the risks of getting scratches all over" as one of the benefits of daily disposable lenses. Just how easily to extended wear lenses scratch?

I know hard lenses can get scratched, but hadn't heard of soft lenses being scratched. They just tear!

Over on the other side of the pond, we call '#' a hash sign. The pound (currency) sign is '£', or do you mean lb as in weight

?

knotlob

Goliath2001 · #65 (**permalink**) 10-19-2010, 04:03 PM

Quote:

Originally Posted by Goliath2001

I know what you mean, knotlob. Myself, I don't mind following a link to another thread here in this forum, but when someone wants me to leave my cozy home at Lens 101, I hesitate.

Speaking of cozy . . . ladies, a picture for you. Prepare to sigh.

How do you like that? No reaction whatsoever.

Bonkers · #66 (**permalink**) 11-12-2010, 12:31 PM

Quote:

Originally Posted by Knotlob

They are better for some people - those who have heavy protein secretions in their tears or who won't or can't clean their lenses at the end of each day. They have advantages when travelling also.

But they are a lot more expensive than monthly disposable lenses (even with solutions).

knotlob

You're not a daily disposable contact lens user, are you knotlob?

Knotlob · #67 (**permalink**) 11-12-2010, 03:38 PM

Quote:

Originally Posted by Bonkers

You're not a daily disposable contact lens user, are you knotlob?

No, I have tried them when prompted by opticians, but I never saw the benefit for me. I did try them when driving over from the west of Ireland to Germany and it's certainly easier just to throw them away in the evening and put fresh ones in, the next morning (especially if you're just grabbing a few hours kip in the car at a motor way service area).

But for every day use, they're not for me. Also handy in an emergency if you have lost or forgotten your regular lenses - cheap enough to buy a packet of them on holiday, etc.

knotlob

Hottchick · #68 (**permalink**) 11-12-2010, 04:24 PM

Quote:

Originally Posted by Knotlob

No, I have tried them when prompted by opticians, but I never saw the benefit for me. I did try them when driving over from the west of Ireland to Germany and it's certainly easier just to throw them away in the evening and put fresh ones in, the next morning (especially if you're just grabbing a few hours kip in the car at a motor way service area).

But for every day use, they're not for me. Also handy in an emergency if you have lost or forgotten your regular lenses - cheap enough to buy a packet of them on holiday, etc.

knotlob

Thanks for that summary, knotlob. I'd like to read how others react to your post.

Juicer · #69 (**permalink**) 11-15-2010, 01:30 PM

Quote:

Originally Posted by Knotlob

No, I have tried them when prompted by opticians, but I never saw the benefit for me. I did try them when driving over from the west of Ireland to Germany and it's certainly easier just to throw them away in the evening and put fresh ones in, the next morning (especially if you're just grabbing a few hours kip in the car at a motor way service area).

But for every day use, they're not for me. Also handy in an emergency if you have lost or forgotten your regular lenses - cheap enough to buy a packet of them on holiday, etc.

knotlob

It sounds like you like to have the daily disposable lenses around for spares when the longer duration lenses are not available, would that be correct?

Knotlob · #70 (**permalink**) 11-15-2010, 05:04 PM

Quote:

Originally Posted by Juicer

It sounds like you like to have the daily disposable lenses around for spares when the longer duration lenses are not available, would that be correct?

Well yes in a way, accidentally. I used to wear vial lenses, but travelled on holiday to Scotland to see the 'old dear'. Then the whole family departed for Madeira for a family reunion. On the second last day of the vacation, I tore a lens and had left my spare lenses in Scotland. Managed to buy a pack of daily disposables to suit at a local pharmacy. Fortunately they are not so bogged down with red tape on prescriptions as they are in the US. I always have a note of my prescription with me anyway. Obviously I would have been unable to buy a replacement vial lens there on a Sunday, so the Daily Disposables saved the day.

knotlob

sweet gal · #71 (**permalink**) 11-23-2010, 03:39 AM

Its not a waste of money if you use disposable contact lens.It is a way of getting rid of future lens-related eye problems.In fact many eye care specialists says that frequent lens replacement is a healthy thing to do.

UNIT · #72 (**permalink**) 11-23-2010, 10:51 AM

Quote:

Originally Posted by Knotlob

Well yes in a way, accidentally. I used to wear vial lenses, but traveled on holiday to Scotland to see the 'old dear'. Then the whole family departed for Madeira for a family reunion.

knotlob

Gee, my last family reunion was in my brother's back yard in the suburbs. We didn't get to jet off to some exotic location. Must be nice.

Knotlob · #73 (**permalink**) 11-23-2010, 12:12 PM

Quote:

Originally Posted by UNIT

Gee, my last family reunion was in my brother's back yard in the suburbs. We didn't get to jet off to some exotic location. Must be nice.

LOL. Our family is scattered all over the world, so it was a special occasion

.

knotlob

Eyerobot · #74 (**permalink**) 11-23-2010, 12:47 PM

Quote:

Originally Posted by Knotlob

LOL. Our family is scattered all over the world, so it was a special occasion

.

knotlob

Must have been.

Were you and your contact lenses comfortable while on the beautiful island paradise of Madeira?

Knotlob · #75 (**permalink**) 11-23-2010, 01:19 PM

Quote:

Originally Posted by Eyerobot

Must have been.

Were you and your contact lenses comfortable while on the beautiful island paradise of Madeira?

Yes, very comfortable thanks. It's quite humid there walking in the mountains along the irrigation channels (lavadas) and also of course on the water (whale watching/swimming with the dolphins).

Comfortable until I tore one of the lenses

knotlob

Jurassicmark · #76 (**permalink**) 11-23-2010, 02:16 PM

Quote:

Originally Posted by Knotlob

Yes, very comfortable thanks. It's quite humid there walking in the mountains along the irrigation channels (lavadas) and also of course on the water (whale watching/swimming with the dolphins).

Comfortable until I tore one of the lenses

knotlob

There will be a slight pause as we all turn green with envy.

We'll even throw in a bit of sympathy for you and your torn contacts.

I'm still envious, though.

Ynot · #77 (**permalink**) 12-09-2010, 02:39 PM

Quote:

Originally Posted by Knotlob

Yes, very comfortable thanks. It's quite humid there walking in the mountains along the irrigation channels (lavadas) and also of course on the water (whale watching/swimming with the dolphins).

Comfortable until I tore one of the lenses

knotlob

I hope the dolphins weren't responsible.

Knotlob · #78 (**permalink**) 12-09-2010, 08:07 PM

Quote:

Originally Posted by Ynot

I hope the dolphins weren't responsible.

No, they are usually very inquisitive and friendly - they must see quite a few tourists.

knotlob

Healinghands2 · #79 (**permalink**) 12-10-2010, 10:38 AM

Quote:

Originally Posted by Ynot

I hope the dolphins weren't responsible.

Look at that smile. Is that the face of a troublemaker?

lolasharee · #80 (**permalink**) 02-10-2011, 12:02 AM

Quote:

Originally Posted by Anthanxan

This isn't so much a question for me as much as a kind of informal opinion poll. I know everyone's got an opinion, so go ahead and chime in.
I heard someone say that daily contact lenses are "wasteful." He thinks it's a waste to buy a pair of contact lenses, wear them once, and throw them away. A lot of people think it's a fair price to pay if they don't have to clean their contact lenses.
I'd like to open the floor, as it were, to some opinions. What do you think, Lens 101 reader? Do you wear daily contacts or do you find them wasteful?

I would never throw them away after wearing them once. They haven't sold me on the difference of the manufacturing of daily contacts verses yearly. As far as I'm concerned "as a non expert consumer" it's all marketing brilliance.

Dragonslayer · #81 (**permalink**) 02-10-2011, 10:55 AM

Quote:

Originally Posted by lolasharee

I would never throw them away after wearing them once. They haven't sold me on the difference of the manufacturing of daily contacts verses yearly. As far as I'm concerned "as a non expert consumer" it's all marketing brilliance.

Oy.

Look around this site. Look at post #30 in this thread. There's all kinds of stuff about the difference between lenses. There's a BIG difference between daily and yearly lenses. Please don't tell me you wear daily disposable lenses for a year.

If you're horrified by the idea of discarding a pair of contact lenses after only wearing them once, then wear 2 week or monthly lenses. It's simple and it can even be cheaper.

I'd be curious to know what your eye doctor thinks about wearing daily disposable lenses more than once.

lolasharee · #82 (**permalink**) 02-10-2011, 12:12 PM

Quote:

Originally Posted by Dragonslayer

Oy.

Look around this site. Look at post #30 in this thread. There's all kinds of stuff about the difference between lenses. There's a BIG difference between daily and yearly lenses. Please don't tell me you wear daily disposable lenses for a year.

If you're horrified by the idea of discarding a pair of contact lenses after only wearing them once, then wear 2 week or monthly lenses. It's simple and it can even be cheaper.

I'd be curious to know what your eye doctor thinks about wearing daily disposable lenses more than once.

Ah yes...love to learn something new (#30). I guess I have the perspective of someone who wears them purely for cosmetic purposes.... no prescription. And I may only wear them once or twice a week. So, a daily lens would likely not even make it's into my Eyebox. I'm a yearly type of girl.

Thanks for the info though... knowledge is power.

ElizabethSydey · #83 (**permalink**) 02-10-2011, 12:45 PM

Quote:

Originally Posted by lolasharee

Ah yes...love to learn something new (#30). I guess I have the perspective of someone who wears them purely for cosmetic purposes.... no prescription. And I may only wear them once or twice a week. So, a daily lens would likely not even make it's into my Eyebox. I'm a yearly type of girl.

Thanks for the info though... knowledge is power.

I'm glad you understand Dragonslayer's concern. A lot of people come to this site and talk about over-wearing contact lenses, then get very defensive if anyone tells them not to do that. You've got to be very careful with your eyes.

I know it seems like a waste to put those lenses in your eyes for a few hours and then throw them away, but it's a lot better than getting an eye infection, or worse. "Sweet gal" said the same thing in her post.

I wish you many years of good eye health and success with the Eyebox. It looks great. I hope Lens 101 has been helpful to you.

lolasharee · #84 (**permalink**) 02-10-2011, 10:45 PM

Quote:

Originally Posted by ElizabethSydey

I'm glad you understand Dragonslayer's concern. A lot of people come to this site and talk about over-wearing contact lenses, then get very defensive if anyone tells them not to do that. You've got to be very careful with your eyes.

I know it seems like a waste to put those lenses in your eyes for a few hours and then throw them away, but it's a lot better than getting an eye infection, or worse. "Sweet gal" said the same thing in her post.

I wish you many years of good eye health and success with the Eyebox. It looks great. I hope Lens 101 has been helpful to you.

Thank you.
Yes... it's the best contact lens forum that I've found.
Wishing you eye health...forever!!

Starr · #85 (**permalink**) 02-11-2011, 10:31 AM

Quote:

Originally Posted by lolasharee

Thank you.
Yes... it's the best contact lens forum that I've found.
Wishing you eye health...forever!!

"The best contact lens forum you've found," huh? That's terrific. I'm so glad you like it here. Tell your friends. I like it here too. They've got some good solid information here, not a lot of rumors and wild claims, and sometimes it can get pretty funny as well. A great forum.
The best thing about it is that the sponsor has a little button up in the corner, and that's it. I HATE those websites where as soon as you click on it a full-page advertisement pops up and either wants to sell you something or wants your opinion. I'm so glad Lens 101 doesn't do that.

Did you get that, Webmasters? Keep up the good work.