Influence of the Phenylephrine Test in Outcomes of External Levator Advancement for Involutional Ptosis.

Purpose: This study aims to evaluate the influence of preoperative phenylephrine testing on the surgical outcome of patients undergoing surgery for involutional ptosis by external levator advancement.

Methods: This was an observational, monocentric, retrospective study. Fifty-one eyelids from 32 patients, who had surgery between January 2018 and May 2023, were included for analysis.