Comparison of single rhomboid vs double rhomboid silicon band frontalis suspensionin terms of upper lid contour in ptosis surgery

Aim: to compare the effect of single rhomboid and double rhomboid frontalis suspension using 2 mm silicon band on upper lid contour in ptosis surgery. methods: this randomized control study was conducted at the department of ophthalmology,nishtar hospital,multan from march 2011 to march 2014. a total of 40 patients with unilateral ptosis were included in the study. patients were divided into two groups a and b. patients of group-a were operated by single rhomboid method and group-b were operated by double rhomboid method. results: overall 39 patients came for follow up. 19 patients in group-a came for follow up while one patient lost to follow,however all 20 patients of group-b came for follow up. 12 patients out of 19 in group-a showed lid contour symmetry while 3 out of 20 in group-b showed upper lid asymmetry. conclusion: in this study we found that single rhomboid ptosis surgery has 4.2 times more relative risk for asymmetry of upper lid contour than double rhomboid silicon band frontalis suspension.