Clinical profile and perioperative risk factors for post-cataract surgery nonarteritic anterior ischemic optic neuropathy in an Indian population: An emulated target trial.

Onset of psNAION is much later in Indian patients. All patients had classical features of nonarteritic anterior ischemic optic neuropathy, and clinical evaluation was sufficient to establish diagnosis.

One-fifth of patients had no known coexisting risk factors. Perioperative control of blood pressure or blood sugar, and postoperative intraocular pressure were not associated with increased risk.