diopter

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diopter

 [di-op´ter]
a unit of refractive power of lenses: the reciprocal of the focal length in meters is the refractive power in diopters. Symbol D.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

di·op·ter (D),

(dī-op'tĕr),
The unit of refracting power of lenses, denoting the reciprocal of the focal length expressed in meters.
[G. dioptra, a leveling instrument]
Farlex Partner Medical Dictionary © Farlex 2012

di·op·ter

(D, Δ, δ) (dī-op'tĕr)
The unit of refracting power of lenses, denoting the reciprocal of the focal length expressed in meters.
[G. dioptra, a leveling instrument]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Diopter (D)

Unit describing the amount of focusing power of a lens.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.