Refractive status and axial length in patients with congenital ptosis coexisting concomitant exotropia

AIM:To investigate the refractive status and axial length in patients with mild to moderate congenital ptosis coexisting concomitant exotropia.METHODS:In this prospective observational study, we divided all patients between September 2011 and February 2021 into three groups: 18 patients with mild to moderate congenital ptosis coexisting concomitant exotropia(CPE), 19 patients with mild to moderate simple congenital ptosis(CP)and 30 patients with simple concomitant exotropia(CE). All subjects underwent ocular examinations, including axial length, and cycloplegic refraction. The prevalence of refractive errors, amblyopia, spherical power, astigmatism, spherical equivalent, and axial length were compared between CPE, CP and CE.RESULTS:Ptosis occurred mostly in both eyes in CPE group about 17 cases(94%), but mostly in one eye in CP group about 13 cases(69%), with a significant difference between the two groups(χ2=15.531, P