J Korean Ophthalmol Soc > Volume 54(8); 2013 > Article
Journal of the Korean Ophthalmological Society 2013;54(8):1269-1274.
DOI: https://doi.org/10.3341/jkos.2013.54.8.1269    Published online August 15, 2013.
Widening of Palpebral Fissure Due to Lateral Rectus Muscle Recession.
Sung Bok Lee, Dong Won Heo, Han Min Lee, Yeon Hee Lee
Department of Ophthalmology, Chungnam National University College of Medicine, Daejeon, Korea. opticalyh@hanmail.net
외직근 후전술에 의한 안검열의 확장
이성복⋅허동원⋅이한민⋅이연희
Department of Ophthalmology, Chungnam National University College of Medicine, Daejeon, Korea
Abstract
PURPOSE
To evaluate the incidence and course of widening of palpebral fissure after unilateral lateral rectus muscle recession. METHODS: The palpebral fissure width (PFW) was measured in 20 patients with intermittent exotropia before unilateral rectus muscle recession and 1 week, 1 month and 6 months after the surgery. RESULTS: The amount of recession was from 7.5 to 9.0 (mean 8.37 +/- 0.51) mm. More than 0.6 mm of change in PFW after surgery was defined as the significant change. The significant change was observed in 10 patients (50%) after 1 week, 7 patients (35%) after 1 month and 7 patients (35%) after 6 months after the surgery. The amount of recession was significantly greater in the group with significant change (8.60 +/- 0.39 mm) than the group without significant change (8.15 +/- 0.53 mm) (p < 0.05). CONCLUSIONS: Thirty five percent of the patients showed palpebral fissure widening lasts at least 6 months after unilateral lateral rectus muscle recession. We think it is necessary to notice patients about the possible change in palpebral fissure width before strabismus surgery. And we believe that more cosmetically satisfactory outcome would be resulted if surgeons consider eyelid condition when they are planning strabismus surgery.
Key Words: Lid change;Palpebral Fissure;Rectus recession;Strabismus surgery


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