Apparatus for examining anterior portions of the eye

Details Apparatus for examining anterior portions of the eye Apparatus for examining anterior portions of the eye

1980-11-12

1983-09-13

Evans, F. L.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351206, 351221, A61B 310

Patent

active

044038410

ABSTRACT:
The invention provides an ophthalmological technique and instrumentation for making better and more facile examinations of the anterior portion of an eye, by employing a known interference-contrast technique in on-axis combination with an illumination-source, and having the feature of binocular-microscope viewing. In the form described, polarized light from the source is introduced to the microscope-objective axis at a location between a Nomarski prism and the associated analyzer of the interference-contrast system. This polarized light passes through the Nomarski prism and the microscope objective enroute to the eye being examined; from the eye, it is reflected back through said objective and prism to the analyzer, where a beam-splitting prism serves the respective ray paths of a binocular-microscope viewing system.

REFERENCES:
patent: 3850527 (1974-11-01), Winthrop et al.

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