What time is the visual acuity chart, check the eyesight is how much, that is to say, what time is the eyesight.
And myopic Glasses Online how many degrees, this degree is the unit of refraction, how many myopic Frames Online astigmatism expresses with degree. Visual acuity can not be estimated according to the degree, need to use an EyeGlasses Store chart to check; Also cannot estimate how many degrees according to a few eyesight, need optometric examination ability to know specific degree.
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