The acceptance of a vitreous carbon alloplastic material, Proplast, in the rabbit eye.

Proplast, a vitreous, carbon-Teflon, fluorocarbon polymer, was tested in rabbits for corneal tolerance and acceptance. Toxicity, vascularization, epithelialization, infection, and extrusion were studied clinically and histologically. Four techniques were used: implantation of irregular-shaped pieces of material in an interlamellar corneal pocket, lamellar graft implantation with one exposed surface, full-thickness corneal implants in a manner similar to penetrating keratoplasty, and full-thickness implants covered by a conjunctival flap.

Aeromonas hydrophila corneal ulcer.

Two healthy men developed acute corneal ulcers caused by Aeromonas hydrophila after receiving traumatic foreign body injuries to the cornea. The ulcers resolved after treatment for gram-negative bacterial corneal ulceration. A history of contamination by water, soil, or material from an aquatic source was a significant factor in each case.