Analysis of application of levator muscle resection on severe blepharoptosis patients

Abstract

Objective To prove the feasibility and curative effect of levator muscle resection, and to compare it with other operative methods, to offer both theoretical and clinical evidence to clinical works. Methods According to operation methods, the patients were divided into 2 groups, 24 (29eyes) had gone through levator muscle resection, while the other 8 (9 eyes) had frontal muscle ventrofixation. The patients were observed for 6 months at least, and compared the effect of operation according to palpebra superior location after operation, palpebral fissure hysteresis, palpebra superior dysraphism and exposure keratitis. Results In group that was done shortening operation, after 6 months, the incidence of insufficient rectification and hysteresis of upper eyelid was lower than that of ventrofixation. Meanwhile, success rate of operation after 6 months in former group was similar to that of latter one. Conclusions If elasticity of levator muscle is more than 15mm, levator muscle resection is suitable to severe congenital ptosis; shortening operation shows superiority over the operative method of frontal muscle fascial flap, by recovering physiological function of eyelid and improving the outlook. Key words: Ptosis; Levator muscle resection; Severe