Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Patent
1997-10-01
1999-03-16
Manuel, George
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Subjective type
A61B 3024
Patent
active
058836926
ABSTRACT:
A system is provided for measuring the color visual fields of a patient's eyes, and includes a viewing area for the patient to direct one of their eyes toward. The viewing area also has a viewing area perimeter, and the viewing area is divided into four substantially equal quadrants. The system further includes a fixation structure, which is located substantially at a central portion of the viewing area. Generally, the purpose of the fixation structure is to hold the attention of the patient. There are also a plurality of predetermined and substantially linear paths included in the system. The paths extend in directions radially outward from the fixation structure toward the viewing area perimeter. The plurality of predetermined paths are spaced apart by substantially equal angles of separation. Also, each quadrant of the viewing area includes at least two predetermined paths therein. A stimuli target is also provided to continuously and automatically move along the predetermined paths. The stimuli target moves in a direction beginning at a beginning point on the viewing area and continues toward an ending point for each path. The stimuli target completes movement on a first path before beginning movement on a second path.
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Agonis Dale Lawrence
Kim Andrew Ki Hyon
Wesley Morgan Nathaniel
Wesley Newton K.
Manuel George
Retsan, Inc.
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