diopter

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Related to prism diopter: prism dioptre

di·op·ter

 (dī-ŏp′tər)
n.
A unit of measurement of the refractive power of lenses equal to the reciprocal of the focal length measured in meters.

[Obsolete diopter, an instrument for measuring angles, from Latin dioptra, from Greek dioptrā : dia-, dia- + optos, visible; see okw- in Indo-European roots.]

di·op′tral (-trəl) adj.

di•op•ter

(daɪˈɒp tər)

n.
a unit of measure of the refractive power of a lens, having the dimension of the reciprocal of length and a unit equal to the reciprocal of one meter. Abbr.: D
Also, esp. Brit.,di•op′tre.
[1585–95; < Latin dioptra < Greek: instrument for measuring height or levels =di- di-3 + op- (for ópsesthai to see) + -tra n. suffix of means]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.diopter - a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists
unit, unit of measurement - any division of quantity accepted as a standard of measurement or exchange; "the dollar is the United States unit of currency"; "a unit of wheat is a bushel"; "change per unit volume"
Translations
dioptrie

di·op·ter

, dioptre
n. dioptría, unidad de medida de refracción de un lente.

diopter

n dioptría
References in periodicals archive ?
3) A partial tendon transposition could be considered if a patient has a prior IRR, and has <25 prism diopter (PD) vertical deviation in primary gaze, or if the patient does not have a prior IRR and the deviation in primary gaze is <10 PD.
Abbreviations: AOA = amplitude of accommodation, BVA = Binocular Vision Assessment, CISS = Convergence Insufficiency Symptoms Survey, COR = coefficient of repeatability, COVS = computerized oculomotor vision screening, cpm = cycles per minute, D = diopter, LOA = limit of agreement, MANOVA = multivariate analysis of variance, mTBI = mild traumatic brain injury, NFV = negative fusional vergence, NPC = near point of convergence, PD = prism diopter, PFV = positive fusional vergence, RDS = random dot stereogram, SD = standard deviation, USAARL = U.
09%) 1(10%) XT 21-40 11(55%) 0(0%) 0(0%) 0(0%) XT 41-60 6(30%) 0(0%) 0(0%) 0(0%) Total 20(100%) 10(100 %) * 11(100%) ** 10(100%) *** ET- Esotropia; XT- Exotropia; PD- Prism diopter * 10 patient excluded (7 pt X (T) Distance & 3 pt ET Distance) ** 9 patient excluded (7 pt X (T) Distance & 2 pt ET Distance) *** 10 patient excluded (7 pt XT Distance, 1 pt ET Distance & 2 patient lost follow-up.