Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1986-05-27
1987-10-13
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
350410, A61B 310, G02B 2122
Patent
active
046994807
ABSTRACT:
A surgical ophthalmoscope for observing the fundus of a patient's eye, the ophthalmoscope having a left eyepiece and a right eyepiece, a light source for directing light into the patient's eye, a condensing lens for focusing an image of the patient's eye in a focal plane perpendicular to an optical axis, a telescopic tube, an image-interchanging device for splitting the image into a left image and a right image and then interchanging the images such that image rays entering the right side of the condensing lens are directed to a right optical path, while image rays from the left side are directed to a left optical path, and left and right magnifying devices, each including an objective lens and an ocular lens situated between the image-interchanging device and the eyepieces in optical alignment to magnify the interchanged images and to transmit the magnified images to the respective eyepieces.
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Bovernick Rodney B.
Eye Research Institute of Retina Foundation
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