Patents Assigned to Vision Research Associates, Inc.
  • Patent number: 4634243
    Abstract: The present invention psychophysically detects earliest signs of loss of vision due to nerve loss in glaucoma and ocular hypertension. An instrument employs a dynamic random dot background field and a movable target that consists of a circular area in which the dots are spatially and temporally coherent. Thus, visual fields will be based on pattern discrimination rather than on conventional measures of luminance discrimination.
    Type: Grant
    Filed: December 26, 1984
    Date of Patent: January 6, 1987
    Assignees: LKC Systems, Inc., Vision Research Associates, Inc.
    Inventors: Robert W. Massof, John N. Mangat-Rai