Apparatus for corneal corrective techniques

Details Apparatus for corneal corrective techniques Apparatus for corneal corrective techniques

1982-01-04

1984-12-25

Corbin, John K.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351212, A61B 310

Patent

active

044900228

ABSTRACT:
A quantitative corneascope for use with a surgical microscope in performing corrective techniques on the eye includes a pair of hinged image projection housing members movably mounted on each side of a surgical microscope and a light and image source for reflecting partial segments of placido rings (mires) from the corneal surface of the eye. The microscope utilizes a beam splitter to provide multiple viewing by an operating doctor, an assistant and a television camera. The camera permits viewing of the mires as reflected from the eye, on a monitor. The monitor is provided with apparatus for generating cursor lines on the viewing surface, which cursor lines represent predetermined radii of curvature corresponding to the range of spherical eye shapes. The cursor lines may be adjusted to discrete values in this range of radii of curvature which in turn changes the spacing between the straight lines of the cursor display. The cursor lines may also be adjusted along the X-Y coordinates of the viewing surface.

REFERENCES:
patent: 4157859 (1979-06-01), Terry
patent: 4283124 (1981-08-01), Matsumura

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