Contact lens device null for indirect ophthalmoscope for

摘要

A compound diagnostic indirect ophthalmoscopy contact lens utilized for illumination and observation of the fundus of the eye including a plus powered meniscus aspheric contact element and a biconvex aspheric anterior element, each of the lens elements contributing positive refractive power to the optical system and co-acting to illuminate and form an aerial image of the fundus of the eye.