J Korean Ophthalmol Soc.  2009 Jul;50(7):1093-1097. 10.3341/jkos.2009.50.7.1093.

The Effect of Medial Rectus Resection in Reccurent Exotropia After Lateral Rectus Recession

• Cho WK
• Lee SY
• Lee YC

• KMID: 2212500
• DOI: http://doi.org/10.3341/jkos.2009.50.7.1093

Abstract

PURPOSE
To investigate the effect of unilateral medial rectus resection in recurrent exotropia under 25 Prism Diopter after unilateral or bilateral lateral rectus recession. METHODS: A retrospective chart analysis was conducted for 21 patients who underwent unilateral medial rectus resection for recurrent exotropia under 25PD and uni- or bilateral lateral rectus recession for prior surgery of exotropia. The medial rectus was resected from 5.0 to 7.0 mm by 0.5 mm according to angle deviation at a distance. The postoperative deviated angle was checked at one week, three months and six months postoperatively to investigate the amount of corrected deviation per resected muscle. RESULTS: The average preoperative deviation was 20.57+/-3.37PD. We resected mean 6.1+/-0.62 mm of the medial rectus. At one week after the surgery, the postoperative deviated angle was 2.00+/-4.32PD, After six months it was 6.57+/-7.40PD, and there appeared to be an increase of deviation. Ten patients (48%) fused before surgery and 12 (57%) after surgery. The corrected deviation per resected muscle was 2.88+/-1.08PD. CONCLUSIONS: Unilateral medial rectus resection is an effective surgical method for the treatment of recurrent exotropia under 25 PD after lateral rectus recession.

Keyword

Lateral rectus recession; Recurrent exotropia; Unilateral medial rectus resection

MeSH Terms

Exotropia
Humans
Muscles
Retrospective Studies

Reference

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