Clinical Manifestations of Constant Infantile Exotropia.

Kim, Yong Min; Chang, Jee Ho; Lee, Jong Bok

Original Article

Journal of the Korean Ophthalmological Society 2006;47(8):1316-1322.
Published online August 31, 2006.

Clinical Manifestations of Constant Infantile Exotropia.

Yong Min Kim, Jee Ho Chang, Jong Bok Lee

¹The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea. 491209@yumc.yonsei.ac.kr
²MyongKok Eye Institute, Kim's eye Hospital, Konyang University, Seoul, Korea.

항상외사시를 보이는 영아외사시의 임상양상

김용민¹,장지호²,이종복¹

The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine¹, Seoul, Korea MyongKok Eye Institute, Kim`s eye Hospital, Konyang University², Seoul, Korea

Correspondence: Yong Min Kim, M.D.¹

Abstract

PURPOSE
The purpose of this study is to evaluate the clinical course and surgical outcomes of constant infantile exotopia developed in the first year of life. METHODS: Eighteen patients diagnosed with constant infantile exotropia who underwent surgery between June 1993 and July 2003 were reviewed retrospectively. Age at diagnosis and surgery, refractive error, and preoperative and postoperative prism diopters were evaluated for all patients. RESULTS: The mean age at diagnosis was 7.3+/-2.2 months (2~11 months) and mean deviation was 47.2+/-16.6 prism diopters (PD) (25~90 PD). Inferior oblique muscle overaction was found in 3 (17%) patients. Bilateral lateral rectus muscle recession was performed in all patients and mean amount of recession was 8.0+/-0.9 mm (7.0~9.0 mm). The mean age at surgery was 16.7+/-4.1 months (7~24 months) and the mean postoperative follow-up period was 34.3+/-23.0 months (7~83 months). Thirteen patients (76%) showed stable alignments after the first operation and 3 patients (18%) required reoperation due to undercorrection and recurrence. Among them, one patient (6%) required a third operation. CONCLUSIONS: Early surgical intervention in constant infantile exotropia resulted in good postoperative outcome and stable alignments after the first operation.

Key Words: Bilateral lateral rectus muscle recession;Constant infantile exotropia