Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Folding
Patent
1979-10-01
1981-12-29
Corbin, John K.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Folding
351 16, A61B 310
Patent
active
043079440
ABSTRACT:
A microscope which is suitable for slit-lamp microscopy of the fundus without contact lens, stereo-chronoscopy, and laser photo-coagulation in the fundus and the anterior segment of the eye, is provided having two telescopic sections, the first section having an objective lens capable of projecting by rectangular projection the three-dimensional image of the fundus of an eye in the microscope. A reticle is provided a predetermined distance from the objective lens within the microscope such that when the microscope is properly aligned with the eye, the reticle will be in the plane of the image of pupil projection in the image of the eye. The second telescopic section has a field lens and viewing apparatus and a reticle means spaced from the field lens such that it will be at the focal point of the field lens. Slit-lamp means are provided on the second tubular section such that it will project a slit-lamp beam focused at the focal point of the field lens. A laser beam projection apparatus can also be attached to the second tubular section such that its wide beam will be projected and focused at the focal point on the aerial image of the field lens.
REFERENCES:
patent: 1475698 (1923-11-01), Henker
patent: 3591262 (1969-01-01), Gambs
Bovernick Rodney
Corbin John K.
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