J Korean Ophthalmol Soc.  1996 Jun;37(6):1073-1079.

Posterior Tenotomy and Tenectomy of Superior Oblique Muscle in "A" Pattern Strabismus

• Choi HY
• Roh YB

Abstract

In 7 patients with "A" pattern strabismus with superior oblique overaction, we performed superior oblique posterior tenotomy and tenectomy(PTT) and horizontal rectus muscle surgery for horizontal strabismus, uni- or bilaterally, and analysed the status in degree of postoperative correction of "A" pattern, horizontal and vertical deviation in the primary position for availability of PTT in correction of superior oblique overaction. The average correction of "A" pattern was 10.4 prism diopter(PD). 6 of 7 patients showed eso- or exotropia under 6 PD in the primary position. Two of four patients in bilateral surgery and 2 of 3 patients in unilateral surgery showed the change of vertical deviation in the primary position but there were no problems cosmetically except one. From these results, we think that posterior tenotomy and tenectomy of superior oblique muscle is one of the useful methods for correction of superior oblique overaction in "A" pattern strabismus.

Keyword

"A" patterns; Posterior tenotomy and tenectomy; Strabismus Superior oblique overaction

MeSH Terms

Exotropia
Humans
Strabismus*
Tenotomy*