Upper Eyelid Retraction After Glaucoma Filtering Surgery and Topical Application of Mitomycin C

Abstract

Upper eyelid retraction after filtering surgery is a rarely reported entity. Müller muscle overaction, independent of Graves disease, is a likely cause and has been pointed out as a possible factor in one previous report. Müller muscle fibrosis, euthyroid Graves disease, and mechanical hindrance to an elevated bleb are other possible factors.