J Korean Ophthalmol Soc > Volume 52(11); 2011 > Article
Journal of the Korean Ophthalmological Society 2011;52(11):1326-1330.
DOI: https://doi.org/10.3341/jkos.2011.52.11.1326    Published online November 15, 2011.
Postoperative Exotropic Drift: Comparison of Surgical Methods Combined with Lateral Rectus Muscle Recession in Exotropia.
Jin Woo Kim, Jong Hyuck Lee, Sang Hoon Rah
Department of Ophthalmology, Wonju Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea. shrah@wonju.yonsei.ac.kr
간헐외사시에서 외직근후전술 시 술 후 외편위로의 회귀: 동반된 수술 방법에 따른 비교
김진우⋅이종혁⋅라상훈
Department of Ophthalmology, Wonju Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea
Abstract
PURPOSE
To assess the difference in the change of postoperative ocular alignment in intermittent exotropia corrected by horizontal muscle transposition or inferior oblique muscle recession together with lateral rectus muscle recession. METHODS: A total of 110 patients with intermittent exotropia with a follow-up period of more than 6 months after lateral rectus muscle recession were enrolled in the present study. The patients who received lateral rectus muscle recession only were classified as group 1, patients who received both lateral rectus muscle recession and horizontal muscle vertical transposition in both eyes were classified as group 2, and patients who underwent lateral rectus muscle and inferior oblique muscle recession were classified as group 3. The differences in postoperative ocular alignment among the patient groups were compared. RESULTS: Among the 3 groups, group 2 demonstrated the smallest amount of esotropic deviation in mean postoperative ocular alignment measured 1 day and 1 month after surgery. There was no significant difference among the groups in the mean postoperative ocular alignment and mean amount of exotropic drift at 6 months. The difference in the amount of postoperative exotropic drift 1 year after surgery among the 3 groups was statistically significant. The largest amount of postoperative exotropic drift was observed in group 1. CONCLUSIONS: In correcting intermittent exotropia, the largest amount of postoperative exotropic drift was observed in patients who received only lateral rectus muscle recession. By contrast, the smallest amount of postoperative exotropic drift was observed in patients who received lateral rectus muscle recession with vertical transposition of the horizontal muscle.
Key Words: Intermittent exotropia;Lateral rectus muscle recession;Postoperative exotropic drift


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