Demographics and clinical findings of each case will be recorded including age, sex, involved eye, duration of macular hole, intraoperative diagnosis, extent of vitreo-retinal adhesion and detachment, morphology of macular hole, and relationship of macular hole to posterior hyaloid and fibrovascular proliferation. Data regarding treatment of macular hole, final opening or closure of macular hole, and duration of postoperative follow-up will also be compiled. Results of ophthalmological examinations, including pre- and post-operation best corrected visual acuity, intraocular pressure, and intravitreal tamponade material will be recorded. Optical coherence tomography (OCT) findings will be categorized and recorded. Retinal detachment severity will be classified as: no traction retinal detachment (TRD) or TRD within arcade (grade 1); TRD outside arcade, but not to or beyond the equator (grade 2); and RD extended to the periphery in at least 1 quadrant (grade 3). The degree of macular elevation surrounding the macular hole will be classified into three grades according to pre- or intra-operative observation: shallow: barely visible macular detachment with or without fine retinal folds and with underlying choroidal patterns still identifiable through the detached retina; moderate: obvious detachment with folds and loss of visualization of underlying choroidal patterns; and high: convex shaped or dome shaped detachment with wavy configuration in the macular area. Extent of fibrovascular proliferation will be separated into 3 grades: grade 1: focal adhesions only; grade 2: broad adhesion at more than 1 site or vitreous-retinal adhesion at disc, macula or arcade; and grade 3: vitreous-retinal attachment extending to the periphery.