Combined posterior contusion and penetrating injury in the pig eye. III. A controlled treatment trial of vitrectomy.

A controlled trial of vitrectomy following combined experimental posterior contusion and penetrating eye injury was performed on a group of pigs at 1 day, 2 weeks, and at 10 weeks after the initial injury. Severe intraoperative haemorrhage occurred in 5 eyes operated on at day after injury and in one eye operated on at 2 weeks after injury, but no haemorrhage occurred when surgery was performed 10 weeks after injury.