dioptre


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dioptre

(US), diopter
a unit for measuring the refractive power of a lens: the reciprocal of the focal length of the lens expressed in metres
References in periodicals archive ?
Her accommodation was four dioptres, convergence 10 dioptres, poor accommodation rock and one dioptre of hyperopia.
9 (25%) patients had deviation within 10 prism dioptres on prism bar cover test.