Contact Lenses Forum - Lens 101
SITE SPONSOR
contact lenses

Go Back   Contact Lenses Forum - Lens 101 > Contact Lens Forums > Gas Permeable Contact Lenses > Boston Envision
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Boston Envision Ask a question about Boston Envision, start a discussion about Boston Envision, share your opinion about Boston Envision, or write an online review and share your experience with Boston Envision contact lenses.


Join Lens 101Welcome to the Contact Lenses Forum - Lens 101 forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Boston Envision In Cognito

This is a discussion on Boston Envision In Cognito within the Boston Envision forums; Sometimes, a brand of contact lenses will also go by a generic name, or even ...


Reply
 
LinkBack Thread Tools Display Modes
Site Sponsor
Since 1995, Lens.com has provided all types and brands of contacts,including the popular Boston Envision contacts, Gas Permeable Contact Lenses manufactured by Polymer Technology, at 70% OFF retail. Buy with confidence as Lens.com offers the exact same contact lenses prescribed by your eye doctor delivered to you for less!
  #1 (permalink)  
Old 03-23-2011, 10:33 AM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Posts: 286
Default Boston Envision In Cognito

Sometimes, a brand of contact lenses will also go by a generic name, or even a different brand name. Have you ever heard of Boston Envision going by a different name?
Reply With Quote
  #2 (permalink)  
Old 08-07-2011, 02:22 PM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

In Cognito= Italian gearbox ?

Don't know of any RGPs going under different names.
Reply With Quote
  #3 (permalink)  
Old 08-08-2011, 09:51 AM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Posts: 527
Default

Quote:
Originally Posted by Contact Lens Fitter View Post
In Cognito= Italian gearbox ?

Don't know of any RGPs going under different names.
Don't know about that Italian gearbox thing, but I suppose it's possible, what with the cogs and all.

I found a site that tells us that Boston Envision lenses are known generically as enflufocon B. You can probably see why they went with "Envision" instead.
Reply With Quote
  #4 (permalink)  
Old 08-08-2011, 01:57 PM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Posts: 560
Default

Quote:
Originally Posted by Spongebob View Post
Don't know about that Italian gearbox thing, but I suppose it's possible, what with the cogs and all.

I found a site that tells us that Boston Envision lenses are known generically as enflufocon B. You can probably see why they went with "Envision" instead.
Yeah, "Envision" is a lot easier to say and spell.
Reply With Quote
  #5 (permalink)  
Old 08-08-2011, 02:42 PM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

Quote:
Originally Posted by Spongebob View Post
Don't know about that Italian gearbox thing, but I suppose it's possible, what with the cogs and all.

I found a site that tells us that Boston Envision lenses are known generically as enflufocon B. You can probably see why they went with "Envision" instead.
That's not the generic name, it's the material it's made from. Other RGPs may be made from the same material, but the design of the lenses would be different.
Reply With Quote
  #6 (permalink)  
Old 08-08-2011, 03:08 PM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Location: United States
Posts: 410
Default

Quote:
Originally Posted by Contact Lens Fitter View Post
That's not the generic name, it's the material it's made from. Other RGPs may be made from the same material, but the design of the lenses would be different.
So when you go to a site like the one Spongebob found, they don't even have Boston Envision listed, just "enflufocon B" lenses? How can you tell that they're the same thing as Boston Envision?
Reply With Quote
  #7 (permalink)  
Old 08-08-2011, 07:55 PM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

You can't. You can make 'single cut', bi-curve, tri-curve and multi aspheric RGPs with the same material, but only the 'single cut' is Envision.
Reply With Quote
  #8 (permalink)  
Old 08-09-2011, 10:01 AM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Posts: 426
Default Do I Understand You?

Quote:
Originally Posted by Contact Lens Fitter View Post
You can't. You can make 'single cut', bi-curve, tri-curve and multi aspheric RGPs with the same material, but only the 'single cut' is Envision.
So if a website says that they have "enflufocon B" lenses, they may or may not be Envision, depending on the "cut," right?
Reply With Quote
  #9 (permalink)  
Old 08-09-2011, 05:01 PM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

Quote:
Originally Posted by Deepurple View Post
So if a website says that they have "enflufocon B" lenses, they may or may not be Envision, depending on the "cut," right?
Yes, that's right.
Reply With Quote
  #10 (permalink)  
Old 08-10-2011, 09:15 AM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Posts: 296
Default Getting the Equasion

Quote:
Originally Posted by Deepurple View Post
So if a website says that they have "enflufocon B" lenses, they may or may not be Envision, depending on the "cut," right?
OK, single cut + enflufocon B = Envision contact lenses, right?

Maybe now contact lens Fitter can explain what "single cut" means.
Reply With Quote
  #11 (permalink)  
Old 08-10-2011, 04:49 PM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

Quote:
Originally Posted by Frodo View Post
OK, single cut + enflufocon B = Envision contact lenses, right?

Maybe now Contact Lens Fitter can explain what "single cut" means.
Single cut, bicurve, tricurve and multi aspherical refer to the peripheral curves on the edge of the lenses. They help to adjust centration and movement on the lenses.
Reply With Quote
  #12 (permalink)  
Old 08-11-2011, 10:20 AM
Contact Lenses Forum - Senior
 
Join Date: Nov 2007
Posts: 327
Default

Quote:
Originally Posted by Contact Lens Fitter View Post
Single cut, bicurve, tricurve and multi aspherical refer to the peripheral curves on the edge of the lenses. They help to adjust centration and movement on the lenses.
I suppose it's too complicated for a "101" site to explain exactly what "bicurve" and "tricurve" mean?
Reply With Quote
  #13 (permalink)  
Old 08-14-2011, 07:24 PM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

It does get very complicated. Many people who fit all kinds of soft lenses do not want to have anything to do with RGPs.
Reply With Quote
  #14 (permalink)  
Old 08-15-2011, 12:26 PM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Location: United States
Posts: 259
Default How Come?

Quote:
Originally Posted by Contact Lens Fitter View Post
It does get very complicated. Many people who fit all kinds of soft lenses do not want to have anything to do with RGPs.
Why is that? Is it because of the customizable nature of RGP lenses?
Reply With Quote
  #15 (permalink)  
Old 08-15-2011, 12:41 PM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

Because RGPs do not 'drape' the eye like a soft lens, every parameter must be set by the CL fitter. We are dealing in tenths and hundereds of mms and most lenses are custom order.
Reply With Quote
  #16 (permalink)  
Old 08-15-2011, 02:07 PM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Location: United States
Posts: 410
Default

Quote:
Originally Posted by Contact Lens Fitter View Post
Because RGPs do not 'drape' the eye like a soft lens, every parameter must be set by the CL fitter. We are dealing in tenths and hundereds of mms and most lenses are custom order.
Most lenses are made to order or most RGP lenses?
Reply With Quote
  #17 (permalink)  
Old 08-15-2011, 04:31 PM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Posts: 560
Default

Quote:
Originally Posted by Contact Lens Fitter View Post
Because RGPs do not 'drape' the eye like a soft lens, every parameter must be set by the CL fitter. We are dealing in tenths and hundereds of mms and most lenses are custom order.
And that's why people find RGP lenses uncomfortable?
Reply With Quote
  #18 (permalink)  
Old 08-15-2011, 08:53 PM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

Soft lenses are comfortable almost immediately, RGPs take some time because the lenses are hard. If the edges of the lens are polished properly, once you get used to them, they're just as comfortable as any lens but last much longer. I have patients wearing the same RGPs for four or five years. Also, the harder the lens material, the sharper the vision.
Reply With Quote
  #19 (permalink)  
Old 08-16-2011, 09:37 AM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Posts: 400
Default Boston Envision For Years

Quote:
Originally Posted by Contact Lens Fitter View Post
Soft lenses are comfortable almost immediately, RGPs take some time because the lenses are hard. If the edges of the lens are polished properly, once you get used to them, they're just as comfortable as any lens but last much longer. I have patients wearing the same RGPs for four or five years. Also, the harder the lens material, the sharper the vision.
If RGPs can (presumably) be worn safely for four or five years, how do you know when they're done and you can throw them away?
Reply With Quote
  #20 (permalink)  
Old 08-16-2011, 10:33 AM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

Quote:
Originally Posted by Columbia View Post
If RGPs can (presumably) be worn safely for four or five years, how do you know when they're done and you can throw them away?
Depends on the material. Softer materials will warp after a time, and even more rigid materials may get scratched up to a point they cannot be polished smooth anymore, or an Rx change. With soft lenses, O2 must be disolved into the liquid of the lens and absorbed through the lens. With RGP materials, O2 passes directly through the material itself, and therefore does not diminish over wearing time as soft lenses do.
Reply With Quote
  #21 (permalink)  
Old 08-16-2011, 10:50 AM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Posts: 619
Default

Quote:
Originally Posted by Contact Lens Fitter View Post
Depends on the material. Softer materials will warp after a time, and even more rigid materials may get scratched up to a point they cannot be polished smooth anymore, or an Rx change. With soft lenses, O2 must be disolved into the liquid of the lens and absorbed through the lens. With RGP materials, O2 passes directly through the material itself, and therefore does not diminish over wearing time as soft lenses do.
So with RGP lenses you just wear them until they're just too physically beat up to wear any more?
Reply With Quote
  #22 (permalink)  
Old 08-16-2011, 07:31 PM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

Quote:
Originally Posted by Logopolis View Post
So with RGP lenses you just wear them until they're just too physically beat up to wear any more?
Pretty much. For some people, price has a lot to do with it. In some states, only Dr.s can fit CLs and have you by your wallet, because there's no competition. So, if you can get a year supply of soft lenses for $300.00 and RGPs that wil last for years at the same price, it may be worth taking some time to get used to RGPs. By the way, the two safest lenses on the market are 1 Day soft and RGPs.
Reply With Quote
  #23 (permalink)  
Old 08-17-2011, 09:58 AM
Contact Lenses Forum - Senior
 
Join Date: Nov 2007
Posts: 340
Default

Quote:
Originally Posted by Contact Lens Fitter View Post
Pretty much. For some people, price has a lot to do with it. In some states, only Dr.s can fit CLs . . .
I don't understand. Does that mean that in other states, people who are not doctors can fit patients with contact lenses?
Reply With Quote
  #24 (permalink)  
Old 08-17-2011, 01:41 PM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Posts: 296
Default

Quote:
Originally Posted by Contact Lens Fitter View Post
Single cut, bicurve, tricurve and multi aspherical refer to the peripheral curves on the edge of the lenses. They help to adjust centration and movement on the lenses.
Okay, so these terms are used to describe the shape of the contact lenses. The shape of the lenses then helps to keep the contacts from sliding around on your eyes, right?
Reply With Quote
  #25 (permalink)  
Old 08-18-2011, 10:30 AM
Contact Lenses Forum - Senior
 
Join Date: Aug 2010
Posts: 265
Default

Quote:
Originally Posted by Frodo View Post
Okay, so these terms are used to describe the shape of the contact lenses. The shape of the lenses then helps to keep the contacts from sliding around on your eyes, right?
As a general rule, the base curve (or back surface curve) is fit fairly close to the latest corneal curve. The very outside edges, all the way around, must be flatter again in curvature than the base curve in order give some 'edge lift' and prevent the lens from becoming 'suctioncupped' on to the eye. That would prevent tear flow under the lens and extreme difficulty in removal. While these curves do have a role in centration and movement on the eye, diameter-optic zone, weight of material and thickness of material are importatant also.
Reply With Quote
  #26 (permalink)  
Old 08-18-2011, 10:39 AM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Posts: 415
Default

Quote:
Originally Posted by Contact Lens Fitter View Post
As a general rule, the base curve (or back surface curve) is fit fairly close to the latest corneal curve. The very outside edges, all the way around, must be flatter again in curvature than the base curve in order give some 'edge lift' and prevent the lens from becoming 'suctioncupped' on to the eye. That would prevent tear flow under the lens and extreme difficulty in removal. While these curves do have a role in centration and movement on the eye, diameter-optic zone, weight of material and thickness of material are importatant also.
I didn't know about that "edge lift" thing. That's interesting.
Attached Images
File Type: jpg fig3.jpg (306.4 KB, 20 views)
Reply With Quote
  #27 (permalink)  
Old 08-19-2011, 11:22 AM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Posts: 527
Default I'm Trying

Quote:
Originally Posted by Tiger View Post
Sometimes, a brand of contact lenses will also go by a generic name, or even a different brand name. Have you ever heard of Boston Envision going by a different name?
"What's in a name? That which we call a rose
By any other name would smell as sweet."

Romeo and Juliet (Act II, Scene ii, 1-2)

Just thought I'd add a touch of class to the joint.

Looks good, right?

Soitenly!
Attached Images
File Type: jpg CCG15101lg.jpg (15.6 KB, 18 views)
Reply With Quote
  #28 (permalink)  
Old 08-29-2011, 03:57 PM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Posts: 286
Default A Rose is a Rose

Quote:
Originally Posted by Spongebob View Post
"What's in a name? That which we call a rose
By any other name would smell as sweet."

Romeo and Juliet (Act II, Scene ii, 1-2)[/i]
You actually looked up the quote. Nice work Spongebob.
Reply With Quote
  #29 (permalink)  
Old 09-22-2011, 10:16 AM
Contact Lenses Forum - Bachelors Degree
 
Join Date: Dec 2007
Posts: 560
Default I'm a Victim of Soicumstance

Quote:
Originally Posted by Spongebob View Post
"What's in a name? That which we call a rose
By any other name would smell as sweet."

Romeo and Juliet (Act II, Scene ii, 1-2)

Just thought I'd add a touch of class to the joint.

Looks good, right?

Soitenly!
I don't know which is classier, the quote or the picture.
Reply With Quote
  #30 (permalink)  
Old 10-21-2011, 01:47 PM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Location: United States
Posts: 259
Default

Quote:
Originally Posted by Contact Lens Fitter View Post
As a general rule, the base curve (or back surface curve) is fit fairly close to the latest corneal curve. The very outside edges, all the way around, must be flatter again in curvature than the base curve in order give some 'edge lift' and prevent the lens from becoming 'suctioncupped' on to the eye. That would prevent tear flow under the lens and extreme difficulty in removal. While these curves do have a role in centration and movement on the eye, diameter-optic zone, weight of material and thickness of material are importatant also.
So does that mean the edges do not fit as snugly against the cornea as the center?
Reply With Quote
  #31 (permalink)  
Old 10-21-2011, 02:57 PM
luvbostonxo2
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by Xwing View Post
I didn't know about that "edge lift" thing. That's interesting.
from what I can see it looks like a hybrid rpg/soft lens like synergeyes lenses.
Reply With Quote
  #32 (permalink)  
Old 10-21-2011, 03:01 PM
luvbostonxo2
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by Columbia View Post
If RGPs can (presumably) be worn safely for four or five years, how do you know when they're done and you can throw them away?
Only a slit lamp obsevation can determine the quality and state of the lenses.
Reply With Quote
  #33 (permalink)  
Old 10-21-2011, 03:03 PM
luvbostonxo2
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by Tiger View Post
Sometimes, a brand of contact lenses will also go by a generic name, or even a different brand name. Have you ever heard of Boston Envision going by a different name?
nope also because Boston Envision is a type of material and all boston rgp materials to my knowledge are patented (nobody can duplicate the material technology)
Reply With Quote
  #34 (permalink)  
Old 10-21-2011, 03:07 PM
luvbostonxo2
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by Ragnarox View Post
And that's why people find RGP lenses uncomfortable?
Yes there is lens edge awareness in the beginning and during the adaptation process but once your eyes gets use to them...You wont feel anything at all..

I have dry sensitive eyes and I got use to rgp's without a hitch......
Reply With Quote
  #35 (permalink)  
Old 10-21-2011, 03:09 PM
luvbostonxo2
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by Xwing View Post
I didn't know about that "edge lift" thing. That's interesting.
with the elliptical fit...it indicates that this lens is a toric fit.
Reply With Quote
  #36 (permalink)  
Old 10-21-2011, 03:10 PM
Contact Lenses Forum - Senior
 
Join Date: Nov 2007
Posts: 374
Default Generic Names

Quote:
Originally Posted by luvbostonxo2 View Post
nope also because Boston Envision is a type of material and all boston rgp materials to my knowledge are patented (nobody can duplicate the material technology)
Would putting out a generic form of the lens be patent infringement? No one is falsely saying that they created the lenses, they're simply selling them.
Reply With Quote
  #37 (permalink)  
Old 10-21-2011, 03:16 PM
luvbostonxo2
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by unclebuck View Post
Would putting out a generic form of the lens be patent infringement? No one is falsely saying that they created the lenses, they're simply selling them.
its funny tho.....behind the scenes in the labs of these contact lens manufacturers....their bio chemical recipes for certain materials are closely guarded.....!This behind the scenes world is verrrrrrry hush hush!

getting into these labs is also like fort knox.....
Reply With Quote
  #38 (permalink)  
Old 10-21-2011, 04:34 PM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Posts: 253
Default

Quote:
Originally Posted by luvbostonxo2 View Post
its funny tho.....behind the scenes in the labs of these contact lens manufacturers....their bio chemical recipes for certain materials are closely guarded.....!This behind the scenes world is verrrrrrry hush hush!

getting into these labs is also like fort knox.....
I wonder why that is? I suppose there's a lot of money to be made in designing and selling contact lenses. Whenever people break the law, they tend to do so out of desire for more money.
Reply With Quote
  #39 (permalink)  
Old 10-23-2011, 07:56 PM
luvbostonxo2
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by ElaineKramer View Post
I wonder why that is? I suppose there's a lot of money to be made in designing and selling contact lenses. Whenever people break the law, they tend to do so out of desire for more money.
Contact lens manufacturers keep their contact lens plastic chemical recipes very hush and are protected by proprietary law, patents, and a code of silence.

These companies spend enourmous amounts of funding on there scientific research. Its pretty crazy to comprehend!
Reply With Quote
  #40 (permalink)  
Old 10-24-2011, 10:32 AM
Contact Lenses Forum - Junior
 
Join Date: Dec 2007
Posts: 184
Default

Quote:
Originally Posted by ElaineKramer View Post
I wonder why that is? I suppose there's a lot of money to be made in designing and selling contact lenses. Whenever people break the law, they tend to do so out of desire for more money.
Or, as was said on the show from which I took my screen name: "Hired thieves and murderers don't usually work for love."
Reply With Quote
  #41 (permalink)  
Old 11-10-2011, 01:19 PM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Posts: 286
Default

Quote:
Originally Posted by luvbostonxo2 View Post
Contact lens manufacturers keep their contact lens plastic chemical recipes very hush and are protected by proprietary law, patents, and a code of silence.

These companies spend enourmous amounts of funding on there scientific research. Its pretty crazy to comprehend!
Did you say "cone of silence"?
Attached Images
File Type: jpg coneofsilence.jpg (15.2 KB, 7 views)
Reply With Quote
  #42 (permalink)  
Old 11-15-2011, 01:26 PM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Location: United States
Posts: 259
Default

Quote:
Originally Posted by Tiger View Post
Did you say "cone of silence"?
Luvbostonxo2 actually said "code of silence," but I like the picture you provided.
Reply With Quote
Reply

Bookmark This Site
Add a link on your site or blog
Boston Envision Ask a question about Boston Envision, start a discussion, share your opinion, or write an online review and share your experience with Boston Envision contact lenses.

Copy and Paste HTML Below:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 07:04 PM.


Contact Lenses

/ Contact Lens Forums
Daily Disposable Contact Lenses 2
1-2 Week Disposable Contact Lenses
Monthly Disposable Contact Lenses
Color Contact Lenses 2 3 4 5 6 7
Gas Permeable Contact Lenses 2 3
Toric Contact Lenses 2 3
Bifocal Contact Lenses 2
Vial Contact Lenses
Other Contact Lenses 2 3, & Contact Lens Care 2 3 4 5 6 7 8 9 10 11

Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.2.0 RC7 ©2008, Crawlability, Inc.
Copyright © 2001 - 2010 eyeTopics.com, Inc. All rights reserved.

Any materials provided on this web site are for informational purposes only. Have your eyes examined regularly and always follow your eye care professional's instructions for the proper use and care of your contact lenses. IF YOU ARE HAVING ANY UNEXPLAINED EYE DISCOMFORT, WATERING, VISION CHANGE OR REDNESS, REMOVE YOUR LENSES IMMEDIATELY AND CONSULT YOUR EYE CARE PROFESSIONAL BEFORE WEARING YOUR CONTACT LENSES AGAIN.

Site operated by eyeTopics.com, Inc.