×

Corneal onlays

  • US 5,713,957 A
  • Filed: 05/16/1996
  • Issued: 02/03/1998
  • Est. Priority Date: 11/19/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A corneal onlay for use in surgical implantation into or onto the cornea of a mammal, said onlay having an optical axis region with optical characteristics which provide visual acuity therethrough, said onlay being comprised of a non-biodegradable non-hydrogel ocularly biocompatible material, and characterized in that said onlay has a porosity sufficient to allow passage therethrough of tissue fluid components having a molecular weight greater than 10,000 daltons, thereby providing for a flux of tissue fluid between cells anterior of the implanted onlay and cells posterior thereof, wherein the porosity of the optical axis region is such that it allows the flux of tissue fluid components whilst excluding ingrowth of ocular tissue, and wherein said onlay is adapted for epithelial recolonization.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×