Mar 18 2010
Can an eye doctor tell you your contact lens prescription by just looking at your glasses?
Because I went to an eye doctor a few months ago and she just looked at my reading glasses and told me my prescription was -2.00 but then I went again but to another eye doctor because my insurance changed and she did and eye exam and told me my contact lens prescription was -3.00 but I can’t see with those contacts.
they usually take your glasses, does a measurement with your glasses with a measuring instrument, then begin the eye exam based on the existing measurement of your glasses.

on 19 Mar 2010 at 1:20 am
yes, i think so
the really mean is not "just looking" with naked eyes, but they seems to have some like " microscope " but not real microscope to measure your glasses. this is what happened in my country, Indonesia , which is developing country. Probably in yours, it might be much better.
but , it sould be any test again, expecially by " chart of snellen / straub " before writing contact lens prescription , just to make sure and to recheck weather the meansurement is the same as the " microscop" did or not. Bu if didn’t , GP would use the snellen/straub chart measurement for exact prescription
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TV
on 19 Mar 2010 at 1:35 am
Yea they use this microsope thingy to measure it
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on 19 Mar 2010 at 2:15 am
they usually take your glasses, does a measurement with your glasses with a measuring instrument, then begin the eye exam based on the existing measurement of your glasses.
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on 19 Mar 2010 at 2:25 am
They can look at your glasses and get an idea of the prescription, but contact lens prescriptions can differ – my spectacle and contact prescriptions are very different.
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