Patents Assigned to Alan Kwasman
  • Quick screening for scotopic sensitivity syndrome
    Patent number: 5067806
    Abstract: A device permitting the rapid determination of scotopic sensitivity syndrome comprised of small cards with colored filters on visual test patterns. The filter's frequencies correspond to the receptor frequencies of the cones in the retina and their combinations.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: November 26, 1991
    Assignee: Alan Kwasman
    Inventor: Alan Kwasman