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A 23-year-old female asked:

Is it necessary to have a constant cylindrical power in both eyes before doing zyoptix operation?

1 doctor answer1 doctor weighed in
Dr. Richard Carlin
Ophthalmology 51 years experience
Yes: You want to be sure your sphere and cylinder is stable and unchanging before undergoing any refractive procedure.

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Last updated Jul 4, 2014
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