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Diopter

Unit of measure for the refractive (light-bending) power of a lens; eye care practitioners use it in eyeglass and contact lens prescriptions. A negative number refers to nearsightedness; a positive number, farsightedness. For example, someone with -8. 00 diopter lenses is very nearsighted, while someone with +0. 75 diopter lenses is only slightly farsighted.

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  • Industry/Domain: Health care
  • Category: Optometry
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