Ab interno retinochoroidectomy in primates
G. A. Peyman and M. Hindi
Primates underwent the ab interno removal of up to a 6 X 7-disc diameter
area of the retina and choroid adjacent to the optic disc. The area of
resection was treated three weeks before surgery with an encircling row of
xenon arc photocoagulation. Surgery involved photocoagulation of the entire
resected area and removal of the retina and choroid using a wide-angle
cutter vitrophage. Vitreous fluid was replaced in 50% of the eyes with
sodium hyaluronate (Healon). The majority of eyes in which the vitrectomy
fluid was replaced with saline solution became phthisical. All but one eye
containing sodium hyaluronate recovered preoperative intraocular pressures
and maintained the integrity of the remaining intraocular structures.
