Clinical Analysis of Large Recession of Bimedial Rectus Muscles in Esotropia.

Lee, Hyun Dong; Lew, Helen; Lee, Jong Bok; Han, Sung Han

Original Article

Journal of the Korean Ophthalmological Society 1999;40(2):555-561.
Published online February 1, 1999.

Clinical Analysis of Large Recession of Bimedial Rectus Muscles in Esotropia.

Hyun Dong Lee, Helen Lew, Jong Bok Lee, Sung Han Han

¹The Institute of Vision Research, College of Medicine, Yonsei University.
²Department of Ophthalmology, Yonsei University College of Medicine.

"내사시에서 7mm 이상 양안 내직근 후전술의 임상 분석 이현동, 유혜린, 이종복, 한승한 "

이현동(Hyun Dong Lee),유혜린(He Len Lew),이종복(Jong Bok Lee),한승한(Seung Han Han)

Abstract

Nineteen patients with large angle esotropia who have undergone bimedial rectus recession ranging from 7 to 8 millimeters were evaluated. We retrospectively reviewed preoperative and postoperative visual acuity, deviation, ocular motility, fusion, stereoacuity in all patients. The mean preoperative deviation was 76 prism diopters, ranging from 65 to 95 prism diopters and the mean postoperative follow up interval was 55.6 months, ranging from 26 to 80 months. The overall successful rate(horizontal orthotropia within+/-10 prism diopters) was 42.1%(8/19). The rate of undercorrection was 47.7%(9/19) and the rate of delayed consecutive exotropia was 10.5%(2/19). Fusion at near was found in 36.8%(7/19) and stereopsos of 200 seconds or better was found in 15.8%(3/19) of patients postoperatively.We observed no limitation of adduction or convergence. If reoperation was necessary, there still remain other untouched horizontal muscles on which to operate.Therefore, 7 to 8 millimeter medical rectus recession is the first effective procedure for the correction of large angle esotropia with deviations of more than 65 prism diopters.

Key Words: Bimedial rectus recession;Large angle esotropia