Vitrectomy is an intraocular surgical procedure performed by a specialist in which a variety of instruments can be utilized to allow for treatment of many disorders affecting the retina. Some common reasons for vitrectomy surgery include scar tissue or hemorrhage removal from the inside of the eye, repair of retinal detachment, removal of macular epiretinal membranes, treatment of advanced diabetic and sickle cell retinopathy, and removal of lens fragments or other intraocular material.
An Ahmed Valve is used to help reduce intraocular pressure by allowing fluid from the inside of the eye to slowly drain and naturally be absorbed by the body. This technology is useful for advanced cases of neovascular glaucoma associated with retinal vascular occlusion, such as may be seen in central retinal vein occlusion or proliferative diabetic retinopathy.
Retinal detachment may be treated with vitrectomy combined with the placement of an external silicone and which supports the areas of the retinal tears causing the detachment.