From: Refractive error characteristics in patients with congenital blepharoptosis before and after ptosis repair surgery
Characteristic
Patient (eyes)
54 (108)
Age (years), mean ± SD
15.1 ± 4.2
Sex, M/F ratio
2.6:1
Ptosis type (%)
Unilateral
41 (75.9 %)
Bilateral
13 (24.1 %)