Patents Assigned to Visionrx, LLC
  • Patent number: 7155393
    Abstract: The present invention provides a method for establishing fixation during computerized visual field perimetry, requiring the subject to verbally identify the symbol employed as fixation targets as they each appear. Speech recognition techniques are then employed to evaluate the subject's response, and, upon correctly identifying the fixation symbol, a visual test stimulus is displayed at a predetermined location within the subject's field of vision. Fixation is established by displaying to the subject fixation targets represented by varying symbols, which may be displayed at one or more locations on a display monitor. These so-called fixation symbols, include geometrical shapes, letters, numbers, pictures or other symbols readily identifiable by the subject. When a fixation symbol appears, the subject verbally identifies the symbol by saying the name of the symbol into a microphone.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: December 26, 2006
    Assignee: Visionrx, LLC
    Inventors: Jeffrey L. Stewart, Stewart Weiss