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KMID : 0213520080220030174
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Korean Journal of Ophthalmology
2008 Volume.22 No. 3 p.174 ~ p.177
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The Effect of Unilateral Medial Rectus Muscle Resection in Patients with Recurrent Exotropia
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Chae Sun-Hwa
Chun Bo-Young
Kwon Jung-Yoon
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Abstract
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Purpose: To investigate the effect of unilateral medial rectus muscle resection for recurrent exotropia after bilateral lateral rectus muscle recession for intermittent exotropia
Methods: A retrospective analysis was made of thirtypatients who underwent unilateral medial rectus resection for recurrent exotropia. All had prior bilateral lateral rectus recession for intermittent exotropia. Data were collected for age, the preoperative deviation, the postoperative deviation at 2 weeks, 3 months, 6 months and the last visit, and the amount of medial rectus resection performed.
Results: The average preoperative deviation was 27.0±3.6 PD. After unilateral medial rectus resection, average deviation at distance was 2.8 PD at postoperative 2 weeks, 4.5 PD at 3 months, 5.1 PD at 6 months and 5.8 PD at last visit. The average deviation corrected per millimeter of medial rectus resection was 3.53±0.17 PD/mm.
Conclusions: Considering that deviation angles of recurrent exotropia is smaller than those of primary surgery and the possibility of saving the other medial rectus muscle, unilateral rectus muscle resection could be effective surgical method for recurrent exotropia.
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KEYWORD
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Intermittent exotropia, Recurrence, Unilateral medial rectus muscle resection
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