Ophthalmologists are medical doctors who specialize in the diagnosis and treatment of eye problems, diseases, and injuries. Ophthalmologists can diagnose and treat eye diseases, such as diabetic retinopathy and glaucoma; prescribe eyeglasses and contact lenses; treat eye injuries; and perform eye surgeries, such as cataract removal, glaucoma correction, or LASIK surgery. Ophthalmologists may further specialize in care of the retina (retina specialist).