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A 24-year-old male asked:

I was diagnosed with a spherical +.075 power and cylindrical -.1.90 power for both my eyes. is that very bad?

1 doctor answer1 doctor weighed in
Dr. Milton Alvis, jr
Preventive Medicine 42 years experience
OnlyMeans NotPerfect: Focus. Values=magnification, in diopters, which examiner felt were effective to compensate focus (from what you said: clearer vs. less clear) & better read characters. The Phoropter used to arrive at values=simply an arrangement of lenses (quickly changeable glasses, if you will) used, trial & error, to rapidly check what worked better at time checked. Spherical=overall; cylinder+axis=astigmatism.

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Last updated Dec 29, 2016


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