Anastigmatic high magnification, wide-angle binocular indirect a

Details Anastigmatic high magnification, wide-angle binocular indirect a Anastigmatic high magnification, wide-angle binocular indirect a

1981-02-27

1983-08-09

Cohen, Lee S.

Surgery

Truss

Pad

128395, 219121L, 372 6, 372109, A61B 1736

Patent

active

043973108

ABSTRACT:
An improved method and apparatus for photocoagulation of the fundus of a patient's eye eliminates the contact lens and provides for binocular viewing. The technique is characterized by the utilization of a common ophthalmoscopic lens for each of the illumination beam, the observation beam, and the laser beam. A scanning mirror for the laser beam is disposed on the optical axis and is rotatable in two dimensions about a fixed point which is conjugated with the nodal point of the patient's eye with respect to the ophthalmoscopic lens. The binocular viewing paths are converged onto a point on the optical axis in the plane of the first aerial image of the fundus provided by the ophthalmoscopic lens; the laser beam reflected by the scanning mirror is also focused onto that point.

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