An Observational Cohort Study to Explore the Clinical Outcome of Congenital Strabismmus Based on Etiology and Timing of Surgery

All IE patients enrolled were patients who had undergone corrective surgery for strabismus. Postoperative strabismus with 10 prism degrees of overcorrection or undercorrection is within the normal range. During postoperative follow-up, patients with more than 10 prism degrees of residual esotropia were treated conservally with foot orthoscopy according to their refractive status. After 6 months of observation, there were still more than 15 prism degrees of residual esotropia that needed to be corrected by a second operation. For extropia with overcorrection greater than 10 prism degrees, cross-eye training, negative mirror + prism stimulation and conservative observation and fusion training are given in the early stage, and can not be improved within 6 months, requiring a second surgical correction.