comparing two methods of fascia lata use for frontalis suspension

purpose: to compare the results of two different methods of frontalis suspension using fascia lata in congenital ptosis. methods: in a randomized clinical trial, double triangle sling was compared with single triangle sling using fascia lata. eight patients with unilateral and 11 patients with bilateral congenital ptosis were randomly assigned for each procedure. results: there was no statistically significant difference between the two groups in terms of age and sex. mean increase in interpalpebral fissure was 4.35 ± 2.32 mm in the double triangle group and 4.36 ± 1.89 mm in the single triangle group. increase in palpebral fissure was statistically significant in both groups (p=0.00) but there was no difference between the two groups regarding functional (lid fissure height) and cosmetic (lid margin contour) results and early or late complications during follow up. conclusion: single triangle sling method using fascia lata is safe, easy, and fast with acceptable results and can be used instead of conventional double triangle fascia lata sling for treatment of low function ptosis.