Posterior Müller Muscle-Conjunctival Resection as a First Step to Treat Eyelid Ptosis: Clinical Results and Treatment Algorithm.

Background: The posterior Müller muscle-conjunctival resection (MMCR) procedure is a straightforward procedure for the correction of eyelid ptosis with a relatively short operating time and fast recovery. Traditionally, its use was limited to patients with mild involutional ptosis and good levator function and a positive phenylephrine test result.

Objectives: To evaluate the efficacy of the MMCR procedure as a primary step to treat eyelid ptosis with varying etiology and severity, including patients with more severe ptosis and moderate levator function, and to produce a treatment algorithm.