Dr. John Sapienza, from Long Island Veterinary Specialists, performs superficial keratectomy in a cat for a corneal sequestrum, then sutures a BioSIS Ocular .\r \r Vetrix is a Veterinary regenerative medicine company focusing on Extra Cellular Matrix.\r \r Corneal Ulcers are painful injuries that can be caused by anything from pawing to bee stings, the scratch of a stick or bacterial infection. Fortunately, Vetrix® .\r \r A auperficial keratectomy is performed for large Salzmanns nodules with the use diamond burr polishing and MMC application.