Fresnel lens

Definition

A very thin and flexible ophthalmic lens intended to be applied to the back of spectacle lenses to focus light to a focal point to help manage various vision conditions including aphakia (absence of the lens of the eye), myopia, hyperopia, and presbyopia. It is typically made of glass or plastic and its surface is a concentric series of increasingly refractive zones.

GUDID devices

14

Last updated

2023-02-13 09:00:52