Posterior Tenotomy and Tenectomy of Superior Oblique Muscle in

Choi, Hee Young; Roh, Young Bae

Original Article

Journal of the Korean Ophthalmological Society 1996;37(6):1073-1079.
Published online June 1, 1996.

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

Hee Young Choi, Young Bae Roh

Department of Ophthalmology, College of Medicine, Pusan National University, Pusan, Korea.

A 형 사시에서 상사근의 후부절단 및 절제술

최희영(Hee Young Choi),노영배(Young Bae Roh)

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.

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