Comparison of Two Methods for Upper Lid Fascia Lata Sling in Congenital Blepharoptosis: a Randomized Clinical Trial

Purpose: to compare the results of two different methods of upper lid sling withautogenous fascia lata in the treatment of congenital ptosis.methods: in a randomized clinical trial, patients with congenital upper lid ptosis andpoor levator function (<4mm) were randomly assigned to two different methods ofupper lid sling: group a, bitriangular fascia sling (modified crawford method) andgroup b, monotriangular fascia sling (modified fox method).results: this study included 30 upper eyelids (15 eyelids in each surgical group) of 19patients (8 unilateral and 11 bilateral cases) with congenital ptosis. mean increase ineyelid fissure height was 2.7±2.3 mm in group a and 3.4±2.2 mm in group b,respectively. change in eyelid fissure in both groups was significant (p<0.001, paired ttest)but intergroup difference was not (p=0.4, independent sample t-test). earlycomplications such as corneal epithelial defects and entropion, and late complicationssuch as undercorrection were comparable in the two groups. no patient experiencedrecurrent ptosis requiring reoperation in either group.conclusion: the monotriangular method of upper lid fascia sling can be used insteadof the more popular bitriangular method. advantages include less need for fascialtissue, less periocular scar formation and a shorter period of anesthesia.