J Korean Ophthalmol Soc.  1995 Dec;36(12):2231-2236.

Treatment of Near Esotropia with High AC/A Ratio

• Cho YA
• Mun CJ

Abstract

The patients with accommodative esotropia due to high AC/A(accommodative convergence/accommodation) ratio show prominent esodeviation and can not fuse without bifocals at near. The purpose of this study is to eliminate prominent near esotropia in those patients and let them fuse at near without bifocals. We performed unilateral or bilateral medial recti recti recessions according to the angle of near esotropia in 14 patients. Twelve patients showed orthophcria or small esophoria less than 12 delta. Eleven of these patients obtained solid fusion after surgery except 3-year-old patient who could not understand the stereopsis test. One patient had esophoria of 20 delta after surgery and showed gross stereopsis. The other patient recurred 27 delta of intermittent esotropia. Twelve of 13 patients(92.3%) could fuse without bifocals at near. The recession of medial rectus or recti was effective on the removal of prominent near esotropia and obtaining fusion without bifocals. Furthermore it did not disturb angle of deviation and fusion at distant. We recommend this procedure as a secure and effective treatment for near esotropia caused by high AC/A ratio.

Keyword

Bifocals; Fusion; High AC/A ratio; Medial rectus recession; Near esotropia

MeSH Terms

Child, Preschool
Depth Perception
Esotropia*
Humans
Linear Energy Transfer