Diopter
- TRSC International LASIK Center
- Feb 1, 2018
- 1 min read
Updated: Apr 1, 2022

Diopters are a unit of measurement of a lens's refractive power. In ophthalmology, diopters refer to the refractive power of a lens that would be required to correct the eyesight of a given eye.
A negative diopter implies shortsightedness.
A positive diopter implies farsightedness.
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