ˈdaɪ.ɒptrɪk

Definitions

1. adjective

Relating to or resembling a lens or lens system, especially in optics or ophthalmology.

“The dioptric system of the camera lens enabled it to focus on objects at varying distances.”

2. noun

A unit of measurement for the refractive power of a lens, equal to the reciprocal of the focal length in meters.

“The doctor used a dioptric measure to calculate the strength of the patient’s glasses.”