Patents Assigned to M.D.R. Group, Inc.
  • Viscoelastic vitreous substitute with UV blocker
    Patent number: 4853374
    Abstract: This invention relates to a UV-blocked viscoelastic vitreous substitute for use in ophthalmic surgery comprising a hydroxy alkyl-substituted cellulose modified with a UV-absorbent molecule covalently bonded thereto having the type formula: ##STR1## where R.sup.1 is selected from the group consisting of H and OH; R.sup.2 is selected from the group consisting of H, OH or OR where R is any alkyl group; and, R.sup.3 is selected from the group consisting of H, SO.sub.3, OSO.sub.2 X where X is a leaving group.
    Type: Grant
    Filed: June 9, 1987
    Date of Patent: August 1, 1989
    Assignee: M.D.R. Group, Inc.
    Inventor: Mark D. Allen