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A member asked:

Is it the focal length of the lens that measures eyesight?

A doctor has provided 1 answer
Dr. Tim Conrad answered

Specializes in Ophthalmology

No: The lens and the cornea are the refractive elements of the eye. The lens provides about 1/3rd of the total power while the cornea provides 2/3rds.

Answered 1/26/2013

5.3k views

Thank

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