To evaluate motor and sensory results in patients with single stage monocular recession-resection procedure for large angle comitant horizontal strabismus - A prospective study.

Dr Munish Dhawan; Dr. Ankita Sharma; Dr Gagandeep Kaur; Dr SP Singh

Volume : IX, Issue : I, January - 2019

To evaluate motor and sensory results in patients with single stage monocular recession-resection procedure for large angle comitant horizontal strabismus - A prospective study.

Dr Munish Dhawan, Dr. Ankita Sharma, Dr Gagandeep Kaur, Dr Sp Singh

Abstract :

Purpose: To evaluate motor and sensory results in patients with single–stage monocular surgery for large angle (40 diopters or more), concomitant, horizontal strabismus. Material and Methods: In the present study a prospective analysis of 35 cases of large angle strabismus (40 prism diopters or more) was done. Patients included were above 14 years of age with horizontal concomitant squint of 40 prism diopters or more. Surgery involved a two muscle (recession–resection) procedure in a single eye. Follow up was done at first post operative day, one week, one month and three months after surgery to evaluate motor and sensory status. A successful outcome of surgery was taken as deviation within 10 prism diopters of orthotropia/phoria after 3 months. Results: 27 patients (77.14%) out of total had residual angle of deviation within 10 PD. All patients who had their preoperative angle of deviation within the range of 40–59 PD were successfully aligned with residual angle within 10 PD (P<0.001). None of the patients with preoperative deviation of 70 PD and above, met the successful outcome. 13 patients (37.14%) achieved fusion at near three months postoperatively (P <0.001). 8 patients (22.86%) showed stereopsis of 400 seconds of arc or better three months postoperatively (P=0.007). Conclusions: Single stage monocular surgery successfully corrected all cases of concomitant horizontal strabismus with preoperative deviation within 60PD but failed to do so for deviations of 70 PD and above. Successful surgical alignment in patients with good vision led to improvement in binocularity postoperatively.