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Diopter |
Also found in: Dictionary/thesaurus, Legal, Financial, Acronyms, Encyclopedia, Wikipedia, Hutchinson | 0.04 sec. |
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diopter /di·op·ter/ (di-op´ter) a unit for refractive power of lenses, being the reciprocal of the focal length expressed in meters; symbol D. prism diopter a unit of prismatic deviation, being the deflection of 1 cm. at a distance of one meter; symbol ?.
Diopter (D) Unit describing the amount of focusing power of a lens. Mentioned in: Myopia, Photorefractive Keratectomy and Laser-Assisted In-Situ Keratomileusis, Radial Keratotomy diopter a unit adopted for calibration of lenses, being the reciprocal of the focal length when expressed in meters; symbol D. |
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? Mentioned in | ? References in periodicals archive | |
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Other problems have included improper collimation, no purging and incorrect zero diopter settings and infinity focus. The implants are scleral constrictor bands, segments or ribs for inducing accommodation of a few diopters, to correct refractive errors. The lens can treat nearsightedness between the ranges of -4 to -20 diopters with up to 3 diopters of astigmatism. |
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