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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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RGP diameter questions

This is a discussion on RGP diameter questions within the Gas Permeable Contact Lenses forums; I'm currently trying out RGPs. I've just picked up a new pair to try, that ...


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Old 05-02-2009, 04:07 AM
Contact Lenses Forum - Freshman
 
Join Date: May 2009
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Default RGP diameter questions

I'm currently trying out RGPs. I've just picked up a new pair to try, that have an increased optical zone as I was finding I had glare indoors, no matter how well lit the room was, and perfect vision outdoors. I was told I had big pupils and that this is one of the solutions.

However, although my indoor vision is improved, there is still glare. I've been reading about RGPs with larger diameters and discussed this with my optician. She said she thinks I'm already wearing the largest kind, and that the largest available was ordered from the start (though she is getting back to me on this). She listed out some standard sizings, and I think she said mine was a 9.8 diameter? Is this the extra large lens I've been reading about for people with large pupils? Are there any other brands that go higher than this? (The opticians I go to has a contract with just one brand, so I'm wary of being told "this is the maximum diameter" when they could possibly mean "-that this brand stocks".

Thanks.
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Old 07-29-2010, 01:23 PM
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Join Date: Nov 2007
Posts: 343
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Originally Posted by margaretmountford View Post
I'm currently trying out RGPs. I've just picked up a new pair to try, that have an increased optical zone as I was finding I had glare indoors, no matter how well lit the room was, and perfect vision outdoors. I was told I had big pupils and that this is one of the solutions.

However, although my indoor vision is improved, there is still glare. I've been reading about RGPs with larger diameters and discussed this with my optician. She said she thinks I'm already wearing the largest kind, and that the largest available was ordered from the start (though she is getting back to me on this). She listed out some standard sizings, and I think she said mine was a 9.8 diameter? Is this the extra large lens I've been reading about for people with large pupils? Are there any other brands that go higher than this? (The opticians I go to has a contract with just one brand, so I'm wary of being told "this is the maximum diameter" when they could possibly mean "-that this brand stocks".

Thanks.
Hello margaretmountford. Welcome to Lens 101.

It sounds like your eye doctor has been giving you a hard time, and I'm sorry to read that. I don't know what can be causing the glare you report, but it certainly could be contact lenses that are too small.
I went to Lens.com and chose the first lens they listed under "Gas Permeable contact lenses," which happened to be Boston 7. They come in a whole slew of diameters, the largest of which is 12.0, so 9.8 is certainly not as good as it gets. I think it's worth a second opinion, do you?
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Old 07-29-2010, 01:33 PM
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Join Date: Nov 2009
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Originally Posted by pathfinder View Post
Hello margaretmountford. Welcome to Lens 101.

It sounds like your eye doctor has been giving you a hard time, and I'm sorry to read that. I don't know what can be causing the glare you report, but it certainly could be contact lenses that are too small.
I went to Lens.com and chose the first lens they listed under "Gas Permeable contact lenses," which happened to be Boston 7. They come in a whole slew of diameters, the largest of which is 12.0, so 9.8 is certainly not as good as it gets. I think it's worth a second opinion, do you?
This is an old post so don't know if margaretmountford is still on this forum.

However, my RGP lenses are 9.6mm diameter and are available in larger diameters (as pathfinder reports). My RGP lenses are made by Menicon.

knotlob
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Old 07-29-2010, 01:56 PM
Contact Lenses Forum - Senior
 
Join Date: Nov 2007
Posts: 343
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Originally Posted by Knotlob View Post
This is an old post so don't know if margaretmountford is still on this forum.

However, my RGP lenses are 9.6mm diameter and are available in larger diameters (as pathfinder reports). My RGP lenses are made by Menicon.

knotlob
Thanks for backing me up, Knotlob.
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