IRIS ISCHEMIA FOLLOWING PENETRATING KERATOPLASTY FOR KERATOCONUS (URRETS-ZAVALIA SYNDROME)

A fixed and dilated pupil is an uncommon postoperative complication af ter penetrating keratoplasty (PK) for keratoconus. Although the clinic al features have been well described, the precise aetiology is uncerta in. We performed anterior segment fluorescein angiography in the early postoperative period on three patients who developed fixed, dilated p upils after apparently uncomplicated surgery. All of the eyes had seve re iris ischaemia. A possible role for a postoperative rise in intraoc ular pressure in the aetiology of this syndrome is discussed.