A cataract is a dense, cloudy area that forms in the lens of the eye. A cataract begins when proteins in the eye form clumps that prevent the lens from sending clear images to the retina.
Vitreoretinal surgery refers to any operation to treat eye problems involving the retina, macula, and vitreous fluid. These include retinal detachment, macular hole, epiretinal membrane and complications related to diabetic retinopathy.
Glaucoma is a group of related eye disorders that cause damage to the optic nerve that carries information from the eye to the brain. Glaucoma is the second leading cause of blindness.