Patents Assigned to Visionex
  • Schirmer tear test
    Patent number: 5006310
    Abstract: An improved Schirmer I Tear Test is provided. The improvement comprises a strip having a graduated migration scale printed on the test strip and the presence of a water soluble marker dye that comigrates with the tear migration front. Both improvements serve to increase the reproducibility of the test and ease which with the results are read.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: April 9, 1991
    Assignee: Visionex
    Inventors: Jerry Gin, Vernon G. Wong
  • Biodegradable ocular implants
    Patent number: 4997652
    Abstract: Encapsulated drugs are employed for introduction into the chambers of the eye for therapeutic purposes. The administration of drugs is controlled and maintained for long periods of time, while ensuring the substantial absence of significant levels outside the site of administration.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: March 5, 1991
    Assignee: Visionex
    Inventor: Vernon G. Wong
  • Biodegradable ocular implants
    Patent number: 4853224
    Abstract: Microencapsulated drugs are employed for introduction into the chambers of the eye for therapeutic purposes. The administration of drugs is controlled and maintained for long periods of time, while ensuring the substantial absence of significant levels outside the site of administration.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: August 1, 1989
    Assignee: Visionex
    Inventor: Vernon G. Wong