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Gas Permeable Contact Lenses A discussion of gas permeable contact lenses such as Boston 7, Boston Envision, Boston EO, Boston Equalens, Boston Equalens II, Boston ES, Boston II, Boston IV, Boston RXD, Boston XO, Boston XO2, Flosi, Fluorex 300, Fluorex 500, Fluorex 700, Fluorocon, Fluoroperm 151, Fluoroperm 30, Fluoroperm 60, Fluoroperm 92, Hydro 02, OP-2, OP-3, OP-6, O-Perm 30, O-Perm 60, Optacryl 60, Optimum Classic, Optimum Comfort, Optimum Extra, Optimum Extreme, Paragon HDS, Paragon HDS 100, Paragon Thin, Paraperm 02, Paraperm EW, PMMA, Polycon II, SA 18 (Phoenix 18) , SA 32 (Phoenix 32), SGP I, SGP II, SGP III, Trans-aire


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  #1  
Old 08-24-2011, 12:50 PM
nebucanazza nebucanazza is offline
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Default RGP adaptation problems

Hi everyone,

I am from India and have recently started using RGP lenses. A bit of history on my condition - I had congenital cataract and my lenses were removed at a very young age. On top of that I have amblyopia and my left eye is pretty weak. So prescription looks like this:

R: Sph +11.0D Cyl -2.0D Add +3.0D
L: Sph +10.0D Cyl -2.0D Add +3.0D

I have been wearing bifocal spectacles for the last 25 years and am naturally quite well adapted to them.However, multiple factors like compromised vision, lack of progressive options, high distortion, undue magnification and cosmetic appearance made me finally get off my lazy a$$ and go in for contacts.

After a consultation with the doctor, we decided to go for RGP lenses as I wanted long hours of use with great clarity. Frankly this was the only option as the choice of contact lenses available in India is rather poor. There are a few labs here which can do a custom prescription like mine, and they can't do bifocal/multifocal/Synergyes type hybrid designs. So I was prescribed a high Dk(~110) material custom-made spherical RGP as this was the best and high-end option they had.

After I got the lens, the optometrist measured my residual power after a few days of light wear(+2.75D add and 0.5D of cylindrical). I got top-of-the-line free-form progressives made. All the powers were spot on from the get go and my vision was crystal clear when everything worked.

After a week of light wear ranging from 3-6 hours, I had major issues with lens edge visibility, excess tears and lens sliding down very slowly after a few seconds without blinking. I consulted my lens specialist and she tested the fit again with the usual inspections (fluorescein etc) and declared that everything was perfect. Another day or two later and I still wasn't convinced, so she referred me to a doctor who has 20+ years of experience in RGPs. But again nothing was found amiss with the fit and the doctor predicted that once I start wearing it for 8-10 hours regularly, all the symptoms would go away in a few days.

Since then I have been regularly pushing myself and clocking 8-10 hours for the last 7-8 days, but my eyes show absolutely no signs of adapting at all. I don't get any redness/itching/swelling etc but the lens is always surrounded by a lot of tears, thus giving me watery tunnel vision interspersed with bouts of heavy blurriness. I have been using them in the multiple environments of my day-to-day activities and they are quite unusable except for desk work(where tunnel vision is not a crippling limitation). I had a really scary time crossing the road

I am now fast losing hope that these will work for me. With the kind of time and money I have put in, I am really disappointed with the results. I plan to visit the doctor again but will probably get the same reply as her inspections showed that the fit was perfect.

I apologize for the long post, but can anybody offer any advice as to what I can do to make this work?
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  #2  
Old 08-25-2011, 10:45 AM
Aaroncablemom Aaroncablemom is offline
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Default Third Time

Quote:
Originally Posted by nebucanazza View Post
Hi everyone,

I am from India and have recently started using RGP lenses. A bit of history on my condition - I had congenital cataract and my lenses were removed at a very young age. On top of that I have amblyopia and my left eye is pretty weak. So prescription looks like this:

R: Sph +11.0D Cyl -2.0D Add +3.0D
L: Sph +10.0D Cyl -2.0D Add +3.0D

I have been wearing bifocal spectacles for the last 25 years and am naturally quite well adapted to them.However, multiple factors like compromised vision, lack of progressive options, high distortion, undue magnification and cosmetic appearance made me finally get off my lazy a$$ and go in for contacts.

After a consultation with the doctor, we decided to go for RGP lenses as I wanted long hours of use with great clarity. Frankly this was the only option as the choice of contact lenses available in India is rather poor. There are a few labs here which can do a custom prescription like mine, and they can't do bifocal/multifocal/Synergyes type hybrid designs. So I was prescribed a high Dk(~110) material custom-made spherical RGP as this was the best and high-end option they had.

After I got the lens, the optometrist measured my residual power after a few days of light wear(+2.75D add and 0.5D of cylindrical). I got top-of-the-line free-form progressives made. All the powers were spot on from the get go and my vision was crystal clear when everything worked.

After a week of light wear ranging from 3-6 hours, I had major issues with lens edge visibility, excess tears and lens sliding down very slowly after a few seconds without blinking. I consulted my lens specialist and she tested the fit again with the usual inspections (fluorescein etc) and declared that everything was perfect. Another day or two later and I still wasn't convinced, so she referred me to a doctor who has 20+ years of experience in RGPs. But again nothing was found amiss with the fit and the doctor predicted that once I start wearing it for 8-10 hours regularly, all the symptoms would go away in a few days.

Since then I have been regularly pushing myself and clocking 8-10 hours for the last 7-8 days, but my eyes show absolutely no signs of adapting at all. I don't get any redness/itching/swelling etc but the lens is always surrounded by a lot of tears, thus giving me watery tunnel vision interspersed with bouts of heavy blurriness. I have been using them in the multiple environments of my day-to-day activities and they are quite unusable except for desk work(where tunnel vision is not a crippling limitation). I had a really scary time crossing the road

I am now fast losing hope that these will work for me. With the kind of time and money I have put in, I am really disappointed with the results. I plan to visit the doctor again but will probably get the same reply as her inspections showed that the fit was perfect.

I apologize for the long post, but can anybody offer any advice as to what I can do to make this work?
That's a sad story, nebucanazza. Two doctors telling you that your contact lenses fit perfectly when they obviously don't.

Your question sent me scurrying to Google for more information. A lot of the results I got said that contact lenses can slip out of place if they're not fitted properly, but that's not your problem. A lot of the sites also say that RGP lenses just do that and there's not much you can do about it.
The only thing I can think of that you haven't already tried is to go to another doctor that doesn't know the first one. Who knows, maybe the two doctors you've seen worked out some kind of deal. Get a third (independent) opinion.
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  #3  
Old 08-25-2011, 12:40 PM
nebucanazza nebucanazza is offline
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My major problem is having a large tear ring around the lenses at all times. I have been able to wear them for 8-10 hours without any redness or pain, but my vision is watery and unstable and has not improved at all from day one. Could the lens edges have defects in workmanship? Or it is possible that high corrections like mine(+11.0D) need much longer to adapt? I feel I have given these lenses a fair chance and they should have started settling by now

I don't really think that these doctors are lying, they were pretty thorough and considerate in their checkups. I had long discussions with them based on what I had read and they were patient in answering my questions. I'll visit the doctor again soon, lets see what happens.
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  #4  
Old 08-25-2011, 01:48 PM
321contacts 321contacts is offline
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Quote:
Originally Posted by nebucanazza View Post
My major problem is having a large tear ring around the lenses at all times. I have been able to wear them for 8-10 hours without any redness or pain, but my vision is watery and unstable and has not improved at all from day one. Could the lens edges have defects in workmanship? Or it is possible that high corrections like mine(+11.0D) need much longer to adapt? I feel I have given these lenses a fair chance and they should have started settling by now

I don't really think that these doctors are lying, they were pretty thorough and considerate in their checkups. I had long discussions with them based on what I had read and they were patient in answering my questions. I'll visit the doctor again soon, lets see what happens.
Sorry to hear that your contacts have gone wrong, nebucanazza. I hope you get some useful answers when you see that doctor again. Did you try those lenses on while you were still in the doctor's office?
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  #5  
Old 08-26-2011, 06:07 AM
nebucanazza nebucanazza is offline
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So I visited the doctor again today and as expected she didn't find anything wrong with the fit. She said it might take up to a month for me to fully adjust. However after some perseverance on my part, I got her to agree to ordering a higher diameter replacement free of cost ....should get it next week. I have been telling them to go for a higher diameter since week 1, hopefully it'll work.
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  #6  
Old 08-26-2011, 08:54 AM
FirstDown FirstDown is offline
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Default Let's See if Bigger Is Better

Quote:
Originally Posted by nebucanazza View Post
So I visited the doctor again today and as expected she didn't find anything wrong with the fit. She said it might take up to a month for me to fully adjust. However after some perseverance on my part, I got her to agree to ordering a higher diameter replacement free of cost ....should get it next week. I have been telling them to go for a higher diameter since week 1, hopefully it'll work.
I hope that works for you too, nebucanazza. I'd like to know how your doctor reacts if it turns out that a bigger diameter lens actually helps.
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  #7  
Old 09-02-2011, 04:33 AM
nebucanazza nebucanazza is offline
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So I got the new lens with supposedly larger diameter(9.5mm vs 9.2 earlier) and some other slight parameter modifications. Fit and powers are spot on as before. But my problems have not been solved at all. I still get a lot of shine from the lens edges and watery peripheral vision. The doctor said that a high positive power lens is more susceptible to these effects at its highly-polished edges.

Conditions are pretty dusty here - at least once a day I can be found running around in unbearable pain. I was under the impression that the quality and field of my vision would improve with lenses, but it doesn't compare with my freaky thick specs ATM. Maybe my eyes need a few more weeks to adapt.

Problem is, I have invested $300 on a pair of progressive glasses and $135 on the lens already . I discussed with my doctor and there is a yearly soft lens option available at $50, but I'll need completely new glasses. Hope it doesn't come to that.
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  #8  
Old 09-09-2011, 03:30 PM
FirstDown FirstDown is offline
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Quote:
Originally Posted by nebucanazza View Post
So I got the new lens with supposedly larger diameter(9.5mm vs 9.2 earlier) and some other slight parameter modifications. Fit and powers are spot on as before. But my problems have not been solved at all. I still get a lot of shine from the lens edges and watery peripheral vision. The doctor said that a high positive power lens is more susceptible to these effects at its highly-polished edges.

Conditions are pretty dusty here - at least once a day I can be found running around in unbearable pain. I was under the impression that the quality and field of my vision would improve with lenses, but it doesn't compare with my freaky thick specs ATM. Maybe my eyes need a few more weeks to adapt.

Problem is, I have invested $300 on a pair of progressive glasses and $135 on the lens already . I discussed with my doctor and there is a yearly soft lens option available at $50, but I'll need completely new glasses. Hope it doesn't come to that.
Please keep us posted nebucanazza. I hope you're able to get this sorted out. Let us know either way. Maybe someone here can help if this new idea doesn't pan out.

Nice name, by the way. Have you had any mysterious dreams about statues lately?
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  #9  
Old 09-12-2011, 03:57 AM
nebucanazza nebucanazza is offline
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Quote:
Originally Posted by FirstDown View Post
Please keep us posted nebucanazza. I hope you're able to get this sorted out. Let us know either way. Maybe someone here can help if this new idea doesn't pan out.

Nice name, by the way. Have you had any mysterious dreams about statues lately?
Heheh..I chose this name when I first saw the Matrix. I wasn't(and am still not) too aware of king nebuchadnezzar's story.

I have worn the new lens for last 10 days and have absolutely no improvement to report. If anything these are slightly worse. Will consult the doctor again, but on my last visit she had made it clear that she won't be making any more changes for free
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  #10  
Old 09-12-2011, 09:53 AM
JTKirk JTKirk is offline
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Quote:
Originally Posted by nebucanazza View Post
Heheh..I chose this name when I first saw the Matrix. I wasn't (and am still not) too aware of king Nebuchadnezzar story.

I have worn the new lens for last 10 days and have absolutely no improvement to report. If anything these are slightly worse. Will consult the doctor again, but on my last visit she had made it clear that she won't be making any more changes for free
Wow, that's too bad, nebucanazza. Looking over your story, the thing that got my attention was that you're wearing RGP contacts, which are also known as "hard" lenses. I know you said that where you live in India there aren't a lot of lenses to choose from, but do you think you might want to try soft lenses? Maybe your eyes are sensitive to the hard lenses and soft ones will be more comfortable and your eyes will be less watery.

Also, if you want to know the real story of Nebuchadnezzar, read chapter 2 of the Book of Daniel in the Bible. It's pretty neat.
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  #11  
Old 09-12-2011, 01:29 PM
nebucanazza nebucanazza is offline
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Quote:
Originally Posted by JTKirk View Post
Wow, that's too bad, nebucanazza. Looking over your story, the thing that got my attention was that you're wearing RGP contacts, which are also known as "hard" lenses. I know you said that where you live in India there aren't a lot of lenses to choose from, but do you think you might want to try soft lenses? Maybe your eyes are sensitive to the hard lenses and soft ones will be more comfortable and your eyes will be less watery.

Also, if you want to know the real story of Nebuchadnezzar, read chapter 2 of the Book of Daniel in the Bible. It's pretty neat.
Well the idea behind the RGPs was that they would take care of my astigmatism and give me perfect distance vision without glasses(which they failed to do completely as I still had 0.5D of cylinder leftover, but it's still 6/6 vision as per eye tests) and I needed to wear them 12-14 hours per day. Since they apparently didn't have too many high quality options in custom soft lens and my power was very high, they suggested that I go with high Dk RGPs. Since I have aphakia, I either need 2 separate bifocal glasses or progressives to be able to get by - either way the costs are $200-300.I just can't afford to blow up $450 in smoke, although it's not really my fault.

In hindsight, had they prescribed me with soft lens(which is an affordable $50 for yearly lenses, suspect Dk though) I probably wouldn't be ranting on this thread now. Another thing is Indian outdoors can be unbelievably dusty and life with an RGP was pure hell the few times I tried it outside.

I am now punting in the stock market hoping for some big gains If they materialize, I might just throw these godforsaken RGPs away and go for a soft-lens/spectacle pair.
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  #12  
Old 09-12-2011, 02:28 PM
Wendy94 Wendy94 is offline
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Default Gas Perm Lenses and Aphakia

Quote:
Originally Posted by nebucanazza View Post
Well the idea behind the RGPs was that they would take care of my astigmatism and give me perfect distance vision without glasses(which they failed to do completely as I still had 0.5D of cylinder leftover, but it's still 6/6 vision as per eye tests) and I needed to wear them 12-14 hours per day. Since they apparently didn't have too many high quality options in custom soft lens and my power was very high, they suggested that I go with high Dk RGPs. Since I have aphakia, I either need 2 separate bifocal glasses or progressives to be able to get by - either way the costs are $200-300.I just can't afford to blow up $450 in smoke, although it's not really my fault.

In hindsight, had they prescribed me with soft lens(which is an affordable $50 for yearly lenses, suspect Dk though) I probably wouldn't be ranting on this thread now. Another thing is Indian outdoors can be unbelievably dusty and life with an RGP was pure hell the few times I tried it outside.

I am now punting in the stock market hoping for some big gains If they materialize, I might just throw these godforsaken RGPs away and go for a soft-lens/spectacle pair.
It sounds like you have some interesting history. You said that you have aphakia. If my memory served my correctly, that means you've had the lenses of your eyes removed, is that right? That must make it really hard to find contact lenses that really help you. When you're wearing contact lenses, can you see pretty good?

What is your plan if that stock market thing doesn't go as well as you'd hoped?
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  #13  
Old 09-12-2011, 03:47 PM
321contacts 321contacts is offline
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Default Why Not Ask?

Quote:
Originally Posted by nebucanazza View Post
In hindsight, had they prescribed me with soft lens(which is an affordable $50 for yearly lenses, suspect Dk though) I probably wouldn't be ranting on this thread now.
Any chance you can ask your eye doctor for some soft lenses to try?
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  #14  
Old 09-13-2011, 02:09 AM
nebucanazza nebucanazza is offline
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Quote:
Originally Posted by Wendy94 View Post
It sounds like you have some interesting history. You said that you have aphakia. If my memory served my correctly, that means you've had the lenses of your eyes removed, is that right? That must make it really hard to find contact lenses that really help you. When you're wearing contact lenses, can you see pretty good?

What is your plan if that stock market thing doesn't go as well as you'd hoped?
Yes, that is exactly what it means. Contact lenses are actually the preferred mode of correction for aphakic patients and pose no problems as such. Since I have high positive power, glasses always give 20-30% magnification and also make me look like a freak. The RGPs along with the progressives give me extremely clear vision - I never had an issue with that. It's just that my eyes are not adjusting well.

I was mostly kidding about the stock market...One can never plan life based on stock market gains. I can afford to throw down another $450 if I really have to, but I'll try some more with these RGPs. If on the other hand, I make windfall gains in the market my patience will reduce considerably


@321contacts: Nobody has trial lenses in my power. And the bigger problem is that just lens will not be sufficient for me. So to test whether anything works, I have to buy spectacles of the corresponding residual power which will set me back by another $200 -300.
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  #15  
Old 09-13-2011, 09:55 AM
pathfinder pathfinder is offline
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Quote:
Originally Posted by nebucanazza View Post
Yes, that is exactly what it means. Contact lenses are actually the preferred mode of correction for aphakic patients and pose no problems as such. Since I have high positive power, glasses always give 20-30% magnification and also make me look like a freak. The RGPs along with the progressives give me extremely clear vision - I never had an issue with that. It's just that my eyes are not adjusting well.
So let me see if I've got this straight: The RGP lenses correct your vision well, they're just not comfortable to wear, correct? Does your aphakia make your eyes more sensitive to pain?
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  #16  
Old 09-13-2011, 01:40 PM
nebucanazza nebucanazza is offline
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Originally Posted by pathfinder View Post
So let me see if I've got this straight: The RGP lenses correct your vision well, they're just not comfortable to wear, correct? Does your aphakia make your eyes more sensitive to pain?
Yes, they correct my vision properly but are practically unusable outside of desk work. My eyes are heavy and watery at all times and I am practically blinded by reflections when there are multiple light sources present.I have been wearing these for almost a month now and since there is absolutely no improvement from week one, I don't see a magical turnaround on the horizon.

I had specifically asked my doctor if they had any special lens for aphakes before I went for these, and she had assured me that it wouldn't be an issue.
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  #17  
Old 09-13-2011, 03:10 PM
ElizabethSydey ElizabethSydey is offline
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Quote:
Originally Posted by nebucanazza View Post
Yes, they correct my vision properly but are practically unusable outside of desk work. My eyes are heavy and watery at all times and I am practically blinded by reflections when there are multiple light sources present.I have been wearing these for almost a month now and since there is absolutely no improvement from week one, I don't see a magical turnaround on the horizon.

I had specifically asked my doctor if they had any special lens for aphakes before I went for these, and she had assured me that it wouldn't be an issue.
Well, it sounds like it is an issue. I hope you can get it taken care of, nebucanazza. Do you think it's time to find another doctor?
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  #18  
Old 09-14-2011, 01:39 AM
nebucanazza nebucanazza is offline
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Originally Posted by ElizabethSydey View Post
Well, it sounds like it is an issue. I hope you can get it taken care of, nebucanazza. Do you think it's time to find another doctor?
Hmmm..I'm not sure if there are too many better choices. Let me give you a bit of history. Before I chose where to go for fitting my lenses, I had a good look at my options. First I inquired at optical stores, and they told me that since my case could be complicated I better go to specialty eye hospitals. I shortlisted a couple and then visited them. The first one wasn't up to the mark so I went to the other. I had eye checkups to ascertain my suitability for contact lenses. Multiple doctors(including a corneal specialist) have checked my eyes and not one has told me that being a aphake would be a problem for fitting contact lenses. My corneal health is also normal.The doctor I am currently visiting is a specialist in RGPs and I was referred to her because I wasn't comfortable with my lens.

So I would be inclined to believe that the simple reason is that my eyes don't like RGPs and that's not unheard of. The interwebs are full of stories of people who couldn't adjust to RGPs. I guess I am just frustrated that things didn't work out and burned a big hole in my pocket. I am visiting the doc one last time today. If nothing new comes up, it might be time to cut my losses and move on.
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Old 09-14-2011, 09:07 AM
coconutoil coconutoil is offline
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Default I Hope This Works

Quote:
Originally Posted by nebucanazza View Post
Hmmm..I'm not sure if there are too many better choices. Let me give you a bit of history. Before I chose where to go for fitting my lenses, I had a good look at my options. First I inquired at optical stores, and they told me that since my case could be complicated I better go to specialty eye hospitals. I shortlisted a couple and then visited them. The first one wasn't up to the mark so I went to the other. I had eye checkups to ascertain my suitability for contact lenses. Multiple doctors(including a corneal specialist) have checked my eyes and not one has told me that being a aphake would be a problem for fitting contact lenses. My corneal health is also normal.The doctor I am currently visiting is a specialist in RGPs and I was referred to her because I wasn't comfortable with my lens.

So I would be inclined to believe that the simple reason is that my eyes don't like RGPs and that's not unheard of. The interwebs are full of stories of people who couldn't adjust to RGPs. I guess I am just frustrated that things didn't work out and burned a big hole in my pocket. I am visiting the doc one last time today. If nothing new comes up, it might be time to cut my losses and move on.
Hi there nebucanazza. Sorry about all the trouble you've been having. I hope you find a solution to your contact lens issues. I wish you well with the RGP lens specialist. This would not be a good time to stump the expert.
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Old 09-14-2011, 11:40 AM
nebucanazza nebucanazza is offline
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I did visit the specialist today and she reiterated that they cannot make it fit better than this and I believe her(though a bit reluctantly ). She also said that my eyes are not showing any obvious adaptation problems and it might be a matter of allowing more time and making lifestyle changes like increasing blink rate. And somehow...today I saw the tiniest bit of improvement in my teary vision while wearing it for the usual 8-10 hours, probably because for a change I didn't use my computer much. I have waited a long time so I guess another 2-3 weeks is not much. After that, soft lens trials beckon.
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  #21  
Old 09-14-2011, 01:42 PM
packman packman is offline
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Default Wait and See

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Originally Posted by nebucanazza View Post
I did visit the specialist today and she reiterated that they cannot make it fit better than this and I believe her(though a bit reluctantly ). She also said that my eyes are not showing any obvious adaptation problems and it might be a matter of allowing more time and making lifestyle changes like increasing blink rate. And somehow...today I saw the tiniest bit of improvement in my teary vision while wearing it for the usual 8-10 hours, probably because for a change I didn't use my computer much. I have waited a long time so I guess another 2-3 weeks is not much. After that, soft lens trials beckon.
Hi there nebucanazza. Sorry about all the trouble you having with wearing your contact lenses. I hope you see a significant improvement over the next week or so. Here's to your next report.
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  #22  
Old 12-18-2011, 07:27 AM
nebucanazza nebucanazza is offline
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So I am back with my latest report. I have all but stopped wearing my RGPs as even after months of effort, my eyes just hate them. And I did not find the time to visit the doctor till yesterday.I went to another eye hospital this time as they seemed to have a few different options. These were the options explored:

1. Synergyes - Apparently these can be imported to India on order but nobody here knows really how to fit them(they admitted as much readily). Add to that a prohibitively high cost and these are off the table.

2. Soft lens - I had my mind made up on trying some out. However, I was informed that silicone hydrogel materials with high Dk are only available till +6.0D. I am very weary of using outdated pHEMA soft lenses in my high power as I fear for the health of my eyes. These are available for custom order and it's my last option.

I briefly tried out some SiHy lenses and the vision(after additional correction) seemed to be pretty OK. Comfort was as expected, high . However, detailed trials are required and I need to order a pair(along with new progressive glasses) to evaluate them accurately.

3. Piggyback system - I am really not in favour of this from a usability point of view, but it does seem like a worthy option ONLY IF I get to keep my existing RGPs. A zero power SiHy soft lens might do the job but probably they would need to adjust the RGP power and parameters to make this work. I'll be exploring this option when I visit the clinic next.
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  #23  
Old 12-19-2011, 12:30 PM
timetraveler timetraveler is offline
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Quote:
Originally Posted by nebucanazza View Post
So I am back with my latest report. I have all but stopped wearing my RGPs as even after months of effort, my eyes just hate them. And I did not find the time to visit the doctor till yesterday.I went to another eye hospital this time as they seemed to have a few different options. These were the options explored:

1. Synergyes - Apparently these can be imported to India on order but nobody here knows really how to fit them(they admitted as much readily). Add to that a prohibitively high cost and these are off the table.

2. Soft lens - I had my mind made up on trying some out. However, I was informed that silicone hydrogel materials with high Dk are only available till +6.0D. I am very weary of using outdated pHEMA soft lenses in my high power as I fear for the health of my eyes. These are available for custom order and it's my last option.

I briefly tried out some SiHy lenses and the vision(after additional correction) seemed to be pretty OK. Comfort was as expected, high . However, detailed trials are required and I need to order a pair(along with new progressive glasses) to evaluate them accurately.

3. Piggyback system - I am really not in favour of this from a usability point of view, but it does seem like a worthy option ONLY IF I get to keep my existing RGPs. A zero power SiHy soft lens might do the job but probably they would need to adjust the RGP power and parameters to make this work. I'll be exploring this option when I visit the clinic next.
Well, nebucanazza, thanks for checking back. It looks like the silicon hydrogel lenses worked pretty well for you. Are you going to pursue them?
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  #24  
Old 01-22-2012, 02:28 AM
nebucanazza nebucanazza is offline
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I recently consulted my doctor for a piggyback lens fitting. It turns out that they are looking to prescribe a completely new set of RGP and SiHy lenses with the power almost equally split over the two types. I cannot reuse my old lenses and spectacles.This translates to too much cost and hassle without any obvious benefits for me.

So I finally gave up and got a soft lens trial done. Results seem to be very encouraging and I am wondering why I went through all this trouble with RGPs at all

The only catch is that the lens is available in either Lidofilcon B or Hioxifilcon B hydrogel materials(SiHy lenses are not available in my prescription). I have decided to go ahead with hioxifilcon although it has a low Dk (~17). Hoping that it'll not lead to corneal health issues as I see people wearing such lenses long term without problems.
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  #25  
Old 01-23-2012, 11:15 AM
FaceofBoe FaceofBoe is offline
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Quote:
Originally Posted by nebucanazza View Post
I recently consulted my doctor for a piggyback lens fitting. It turns out that they are looking to prescribe a completely new set of RGP and SiHy lenses with the power almost equally split over the two types. I cannot reuse my old lenses and spectacles.This translates to too much cost and hassle without any obvious benefits for me.

So I finally gave up and got a soft lens trial done. Results seem to be very encouraging and I am wondering why I went through all this trouble with RGPs at all

The only catch is that the lens is available in either Lidofilcon B or Hioxifilcon B hydrogel materials (SiHy lenses are not available in my prescription). I have decided to go ahead with hioxifilcon although it has a low Dk (~17). Hoping that it'll not lead to corneal health issues as I see people wearing such lenses long term without problems.
I guess it was fun while it lasted. Here's hoping that those SiHy lenses are available in your prescription soon. I hope you'll still check back with us.
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  #26  
Old 01-25-2012, 09:28 AM
excess3 excess3 is offline
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neb.
cataract patients meed am IOL.
intra-ocular lens.
that will fix 90% of your refraction problems.

glasses or contacts for the small problem
that the IOL does not fix
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  #27  
Old 01-25-2012, 09:51 AM
Orionebula Orionebula is offline
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Quote:
Originally Posted by excess3 View Post
neb.
cataract patients need am IOL.
intra-ocular lens.
that will fix 90% of your refraction problems.

glasses or contacts for the small problem that the IOL does not fix
How old do you have to be to have this IOL procedure done? Is it a physical thing where your eyes have to have time to develop properly, or is it a maturity thing where you have to be old enough not to rub your eyes after the surgery or something?
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  #28  
Old 01-25-2012, 01:31 PM
nebucanazza nebucanazza is offline
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Quote:
Originally Posted by excess3 View Post
neb.
cataract patients meed am IOL.
intra-ocular lens.
that will fix 90% of your refraction problems.

glasses or contacts for the small problem
that the IOL does not fix
I had a case of congenital cataract and they could not plant an IOL into the growing eye, at least with the techniques available at that time( I was 4 then). My doctor said that the eyes grew with some scarring from those cataract operations and advised me against going for an IOL now as there is a higher risk of complications.

I might look into it again if it is deemed safe enough.
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  #29  
Old 01-25-2012, 02:34 PM
Goldar Goldar is offline
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Quote:
Originally Posted by nebucanazza View Post
I had a case of congenital cataract and they could not plant an IOL into the growing eye, at least with the techniques available at that time( I was 4 then). My doctor said that the eyes grew with some scarring from those cataract operations and advised me against going for an IOL now as there is a higher risk of complications.

I might look into it again if it is deemed safe enough.
If past experience with medical procedures is any indication, in just a few years something new and exciting will be developed that can help you despite your scars.
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File Type: jpg bionic-eye-austin.jpg (11.5 KB, 49 views)
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  #30  
Old 01-26-2012, 11:13 AM
Aaroncablemom Aaroncablemom is offline
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Quote:
Originally Posted by Goldar View Post
If past experience with medical procedures is any indication, in just a few years something new and exciting will be developed that can help you despite your scars.
Hey, that looks like a still picture from the opening of The Six Million Dollar Man. Is that a bionic eye?
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  #31  
Old 02-10-2012, 05:55 PM
timetraveler timetraveler is offline
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Quote:
Originally Posted by Aaroncablemom View Post
Hey, that looks like a still picture from the opening of The Six Million Dollar Man. Is that a bionic eye?
It sure looks like that to me.

That or a rather unusual ring.
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  #32  
Old 02-11-2012, 02:14 AM
nebucanazza nebucanazza is offline
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So I have switched to a custom made soft lens(Hioxifilcon A) with digital free-form progressive glasses for over-correction. Seems like these will work pretty well

I just got the specs yesterday and haven't experienced any issues till now. The free-form progressives are very sharp and this is a great improvement over my normal bifocals any day.So far I don't see an obvious degradation in vision quality compared to the RGPs. But then I was never fully comfortable with them.
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  #33  
Old 02-13-2012, 01:08 PM
Unicorn3 Unicorn3 is offline
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Quote:
Originally Posted by nebucanazza View Post
So I have switched to a custom made soft lens(Hioxifilcon A) with digital free-form progressive glasses for over-correction. Seems like these will work pretty well

I just got the specs yesterday and haven't experienced any issues till now. The free-form progressives are very sharp and this is a great improvement over my normal bifocals any day.So far I don't see an obvious degradation in vision quality compared to the RGPs. But then I was never fully comfortable with them.
I hope you have a winner there, nebucanazza.
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  #34  
Old 02-14-2012, 04:54 PM
coconutoil coconutoil is offline
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Quote:
Originally Posted by Aaroncablemom View Post
Hey, that looks like a still picture from the opening of The Six Million Dollar Man. Is that a bionic eye?
If it is, I hope you can see those cool cross hairs.
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  #35  
Old 02-14-2012, 05:11 PM
Petra Petra is offline
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Quote:
Originally Posted by coconutoil View Post
If it is, I hope you can see those cool cross hairs.
Eeek! A snake!!
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