REAL IMAGE FORMING EYE EXAMINATION LENS UTILIZING TWO REFLECTING SURFACES WITH NON-MIRRORED CENTRAL VIEWING AREA

摘要

An inverted real image forming ophthalmoscopic contact lens provides for viewing and treating structures within an eye. The lens comprises a contacting surface adapted for placement on the cornea of the eye, a concave annular anterior reflecting surface, a convex annular posterior reflecting surface, and two non-reflective portions. A first non-reflective portion is positioned along the lens axis and proximate to the convex annular posterior reflecting surface. A second non- reflective portion is positioned along the lens axis and proximate to the concave annular anterior reflecting surface. A light beam emanating from the structure of the eye enters the lens and contributes to the formation of an inverted real image of the structure through an ordered sequence of reflections of the light beam, first in a posterior direction from the anterior concave reflecting surface and next as a negative reflection in an anterior direction from the convex posterior reflecting surface.