Surgeons can remove or peel the<unk>  through the sclera and improve vision by 2 or more Snellen lines. Usually the vitreous is replaced at the same time with clear (BSS) fluid, in a vitrectomy. Surgery is not usually recommended unless the distortions are severe enough to interfere with daily living, since there are the usual hazards of surgery, infections, and a possibility of retinal detachment. More common complications are high intraocular pressure, bleeding in the eye, and cataracts, which are the most frequent complication of vitrectomy surgery. Many patients will develop a cataract within the first few years after surgery. In fact, the visual distortions and diplopia created by cataracts may sometimes be confused with<unk> .
Epiretinal membrane
Foveal avascular zone
Macular hole
Intrastromal corneal ring segment
Myopic crescent
Choroidal neovascularization
Optic disc drusen
Vitreous bulge