The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2002
Filed:
Jun. 27, 2000
Stuart J. McKinnon, San Antonio, TX (US);
Jeffrey L. Stewart, Greenwich, CT (US);
VisionRx, Inc., Elmsford, NY (US);
Abstract
The present invention provides a method for establishing fixation during computerized visual field perimetry, requiring the subject to fixate on a stationary target for a brief instance as he/she moves a secondary target towards the stationary target. In a preferred embodiment, the subject interactively moves the secondary target in the shape of crosshairs toward the stationary fixation target displayed on a monitor using the operations of a computer mouse. The stationary fixation target has preferably the shape of a small red circle in order to make it readily identifiable by the subject. The computer mouse pointer when contacted attaches itself to the secondary target. The subject then moves his head so that the fixation target is directly in front of him/her, and, while staring at the fixation target, moves the secondary target towards the stationary fixation target. When the secondary target overlaps the stationary fixation target, it disappears, causing a flashing visual test stimulus to be displayed to the subject for a preset time. The flashing visual test stimulus appears substantially simultaneous with the overlapping of the secondary target and the fixation target.