Diopter (dpt)

Diopter (dpt),

Definition of Diopter (dpt):

  1. A unit of refractive power, which is equal to the reciprocal of the focal length (in metres) of a given lens.

  2. Metric unit of the refractive power of a lens, computed as inverse of its focal length in meters. Also spelled as dioptre.

How to use Diopter (dpt) in a sentence?

  1. Vision corrected to within one dioptre of perfect sight.

Meaning of Diopter (dpt) & Diopter (dpt) Definition