8-MM BIMEDIAL RECTUS RECESSION IN INFANTILE ESOTROPIA OF 80-90-PRISM DIOPTERS

Sixteen patients with large angle infantile esotropia with deviations of 80-90 prism dioptres were operated at the age of about 2 years. All patients underwent 8 mm bilateral medial rectus recessions. At the la st follow up examination, 6 to 48 months postoperatively (average 16.3 months), successful horizontal alignment was achieved in 12 patients (75%). Four patients (25%) were undercorrected. Clinically significant limitation of adduction or convergence was not observed postoperative ly in any of the patients. Consecutive exotropia was not encountered i n this series but a longer follow up is probably needed in order to as sess its delayed appearance. These results suggest that 8 mm recession of the medial recti is an effective procedure for the correction of l arge angle infantile esotropia of 80-90 prism dioptres and can be cons idered as an acceptable alternative to operations on three or four mus cles.