Long term results of concomitant strabismus treatment based on operation preliminary modeling using three‐dimensional biomechanical eye model

Purpose To analyze long term surgical treatment results of concomitant strabismus (CS) patients based on operation preliminary modeling in three‐dimensional biomechanical eye model (TBEM). Methods There were analyzed surgical treatment results in 106 patients with CS, which were operated on after the operation was preliminary modeled at TBEM ‘SEE‐KID’. Results Orthotropy was obtained in 54/106 patients (50.9%) at the first day postoperatively. 52/106 patients (49.1%) had residual angle of 5–10° – hypocorrection was in 44 patients, and hypercorrection was in 8 patients. 18 patients were lost to follow‐up. At 6–12 months follow‐ups ortothropy has been preserved in 53/88 patients (60.2%), and in 35/88 patients residual angle of 5–10° remained – hypocorrection was in 31 patient, and hypercorrection was in 4 patients. Conclusions TBEM use in complex examination and treatment of CS patients allows predicting surgery result in some cases and accelerates diagnostic process, but the method needs further investigation. Particularly, extraocular muscles biomechanics needs to be more precisely estimated (degree of the muscle hyper‐ or hypofunction, movement amplitude).