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#20
03-25-2009, 02:29 PM
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 Re: Unequal Powers On Mar 25, 4:56*am, Willy Sylers <willysyl...[at]gmail.com> wrote: - quote - > Hi,
Did you mean "vergence" or "vengeance?"> What would happen if the power in one side of a > spectacle is greater or lesser than the other, > for example, you have myopia of -3.0 OD and > -4.0 OS and you are wearing a spectacle that > is -3.0 OD, -3.5 OS. You missed 0.5D or even > 0.25D *in one eye. Would the eye that sees > clearer gets overwork and fatique? What's the > tolerence or power allowance before one has to > change the glass? Does this situation affect > accomodation or vengence of the eyes? They're vastly different notions ;-) |
 03-25-2009, 02:29 PM
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#19
03-25-2009, 10:56 AM
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| Unequal Powers Hi, What would happen if the power in one side of a spectacle is greater or lesser than the other, for example, you have myopia of -3.0 OD and -4.0 OS and you are wearing a spectacle that is -3.0 OD, -3.5 OS. You missed 0.5D or even 0.25D in one eye. Would the eye that sees clearer gets overwork and fatique? What's the tolerence or power allowance before one has to change the glass? Does this situation affect accomodation or vengence of the eyes? What's all the hidden effects of this situation? Thanks. Willy Syler |
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