Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1991-04-30
1993-03-23
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
A61B 314
Patent
active
051968738
ABSTRACT:
An eye movement analysis system projects imaging light to an eyeball for a time duration short enough so as not to create blurring. Image data is then recorded onto a recording medium. The image data is then read out of the recording medium and used to calculate positional data concerning the eyeball's present location. At a later time, image data of the eyeball is again recorded in the recording medium and read out to calculate positional data concerning the eyeball's new location. The two sets of positional data are used to calculate eye movement data for use in diagnosing the causes of vertigo and/or disequilibrium.
REFERENCES:
patent: 4702575 (1987-10-01), Breglia
"Eye Movement Analysis System Using Computerized Image Recognition", The Archives of Otolaryngology-Head & Neck Surgery, Mar. 1990, vol. 116, pp. 338-341.
Ishikawa Norio
Yamanobe Shigeharu
Bovernick Rodney B.
Nihon Kohden Corporation
Toshiaki Yagi
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