Effect of operation time on the treatment of children with congenital internal strabismus

Abstract

Objective To investigate the surgery opportunity choice of congenital esotropia. Methods A retrospective research was taken using the clinical data and the results of the treatment of 146 inpatients with congenital esotropia in our department from Mar 2012 to Mar 2015. The correction rate, lacking-correction rate, and over-correction rate were compared between early surgery group and late surgery group on time of 1 week after surgery and 6 months after surgery, respectively. Results In all the 146 patients, 88 (60.3%) had an esotropia deviation greater than or equal to 40 pupil distance (PD), 38 (26.0%) combined with amblyopia, 12 (8.2%) combined with nystagmus, 30 (20.5%) combined with inferior oblique muscle overaction, 6(4.1%) combined with dissociated vertical divergence (DVD). There was no significant difference between early surgery group and late surgery group on correction rate, lacking-correction rate, and over-correction rate on the time of 1 week after surgery and 6 months after surgery, respectively. Conclusions Congenital strabismus should take surgery at the early-stage, especially for those have large angles. It is better to be operated before 2-year old for a better formation and recovery of binocular visual function. Key words: Esotropia/SU