Risk factors and visual outcomes for postoperative optic neuropathy following pituitary adenoma surgery: a multicenter retrospective cohort study.

We observed that 82% of postoperative optic neuropathy cases occurred within 24 h postoperatively, presenting as sudden visual acuity decline (65%) or visual field defect (35%).

Micro-adenomas (< 1 cm) constituted ~ 8% of the cohort, however, they did not develop postoperative optic neuropathy.

Reoperation was not associated with postoperative optic neuropathy risk (OR = 1.32, 95% CI: 0.58-2.99, p = 0.312).