Effect of 1% sodium hyaluronate (Healon) on a nonregenerating (feline) corneal endothelium.
A series of experiments were performed to investigate the effect of 1% sodium hyaluronate (Healon) on the nonregenerating corneal endothelium of the cat. Aqueous humor replacement with 1% sodium hyaluronate resulted in mild, transient elevations of intraocular pressure compared to eyes that were injected with balanced salt solution. Sodium hyaluronate 1% protected the feline endothelium against cell loss incurred by contact with hyaluronate-coated intraocular lenses compared to endothelial contact with lenses that were not coated with sodium hyaluronate. The use of intraoperative 1% sodium hyaluronate, however, did not protect against endothelial cell loss incurred by penetrating keratoplasty or prevent subsequent skin graft-induced corneal homograft rejections. Homograft rejections were milder, however, in some eyes that received grafts coated with 1% sodium hyaluronate. Image analysis of photographs of trypan blue- and alizarin red-stained corneal buttons after trephining, stretching of Descemet's membrane, rubbing against iris-lens preparations, or immediately after penetrating keratoplasty demonstrated that the stretching of the posterior cornea is an important cause of endothelial damage that would not be protected against by a viscoelastic coating.
D000818:Animals; D001082:Aqueous Humor; D002415:Cats; D003315:Cornea / Q000187:drug effects*; D065306:Corneal Injuries; D016039:Corneal Transplantation; D004727:Endothelium / Q000187:drug effects; D006820:Hyaluronic Acid / Q000494:pharmacology*; D007910:Lenses, Intraocular / Q000009:adverse effects; D011183:Postoperative Complications / Q000517:prevention & control
D006820:Hyaluronic Acid