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Medical Forum / General / Vision / July 2006Change in prescription due to contact lens?
It's only of academic use to me, but am curious to know what kind of dioptre change in prescription is possible when the eye is tested the day after contacts were last worn. Obviously the type of lens worn is a major factor. Are there any studies/figures around for this? TIA Gary > It's only of academic use to me, but am curious to know what kind of dioptre > change in prescription is possible when the eye is tested the day after [quoted text clipped - 3 lines] > TIA > Gary The extreme example of this is in overnight orthokeratology, where a 2 to 3 diopter change is possible. DrG > It's only of academic use to me, but am curious to know what kind of dioptre > change in prescription is possible when the eye is tested the day after [quoted text clipped - 3 lines] > TIA > Gary With well fitting soft lenses, very little. Well fitting rigid gas perms may show up to 1D both in sphere and cyl. With ill fitting lenses and especially with rigid non gas perm, the sky's the limit. I remember back before GP where one might find 5D to 6D of variation. Dr Judy > With well fitting soft lenses, very little. Well fitting rigid gas > perms may show up to 1D both in sphere and cyl. Thanks. How about soft toric lenses? Still 'very little'? > > With well fitting soft lenses, very little. Well fitting rigid gas > > perms may show up to 1D both in sphere and cyl. > > Thanks. How about soft toric lenses? Still 'very little'? If well fitted and clean, very little. Ill fitting, ill cared for, heavily coated lenses are a different story > If well fitted and clean, very little. Ill fitting, ill cared for, > heavily coated lenses are a different story Okay, many thanks for the info :-) I have -1 cylinder power in my left eye and I can see perfectly through it in the morning after wearing RGP the previous day. Not sure how long it would persist. My right eye is -1.5 cyl and it is still a little off. > > It's only of academic use to me, but am curious to know what kind > > of dioptre change in prescription is possible when the eye is [quoted text clipped - 13 lines] > > Dr Judy > It's only of academic use to me, but am curious to know what kind of dioptre > change in prescription is possible when the eye is tested the day after [quoted text clipped - 3 lines] > TIA > Gary soft contacts normally dont produce a change but ive heard focus day and night contacts causing a mild orthoK effect if worn inside out. RGP contacts often have a mild orthoK effect. When someone wants lasik, he must be out of contacts for a while to remove all doubt and allow the cornea to revert back. >> It's only of academic use to me, but am curious to know what kind of dioptre >> change in prescription is possible when the eye is tested the day after [quoted text clipped - 9 lines] >must be out of contacts for a while to remove all doubt and allow the >cornea to revert back. Ace, On what do you base your statements above? Is it *primarily* your clinical research, or is it from your first-hand experience in your optometric practice? Thanks. > >> It's only of academic use to me, but am curious to know what kind of dioptre > >> change in prescription is possible when the eye is tested the day after [quoted text clipped - 17 lines] > > Thanks. most of my knowlege comes from research on the web >> >> It's only of academic use to me, but am curious to know what kind of dioptre >> >> change in prescription is possible when the eye is tested the day after [quoted text clipped - 19 lines] > >most of my knowlege comes from research on the web Make that your signature, Ace. Quit screwing with people's eyesight to feed your hungry ego. I can think of NOTHING more -- as you call it -- "rude." an excellent recommendation. you should sign all your posts with "I am not an eye doctor or have any training in vision science. 100% of what I think I know comes from reading on the internet." if you did that i don't think anyone would have any problems with your constant interjection of comments (which appear to feed your ego rather than really answer anybody's questions). =========== > > >> It's only of academic use to me, but am curious to know what kind of dioptre > > >> change in prescription is possible when the eye is tested the day after [quoted text clipped - 19 lines] > > most of my knowlege comes from research on the web |
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