Apparatus for evaluating eye alignment

Details Apparatus for evaluating eye alignment Apparatus for evaluating eye alignment

1990-11-07

1992-03-10

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351206, 351246, A61B 314

Patent

active

050945211

ABSTRACT:
An apparatus for evaluating the alignment of both eyes of a patient objectively in primary, secondary and tertiary gaze, and the Bielschowsky head tilt positions and to diagnose for phorias, tropias and intermittent tropias. The apparatus has a head restraint and a mounted fixation target in a spaced relationship to the head restraint and having adjustments for adjusting the target along three axis. Electronic shutters are used to occlude each eye during the testing. A camera is used for imaging the eye of a patient having his head in the head restraint with his eyes aligned with the target. The camera is mounted adjacent to the target on the xyz mount. A micro-computer has a monitor screen, and is operatively coupled to the camera for receiving a series of images from the camera stored data for each frame, and comparing one frame image with another frame image of the same eye and gaze position or both eyes in the same frame to thereby determine a patient's ocular alignment, pupil size, corneal diameter and interpupillary distance.

REFERENCES:
patent: 4528989 (1985-07-01), Weinblatt et al.
patent: 4648052 (1987-03-01), Friedman et al.
patent: 4789235 (1988-12-01), Borah et al.
patent: 4859050 (1989-08-01), Borah et al.

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