Ophthalmology is the branch of medicine that deals with the diagnosis, treatment, and prevention of eye diseases and disorders. Ophthalmologists are medical doctors who specialize in eye care and perform surgeries, such as cataract removal and corrective laser surgery. Ophthalmology is also a therapeutic area in clinical research, focusing on developing new treatments for eye conditions and improving vision care. Contract Research Organizations (CROs) often offer services in this therapeutic area to help clinical researchers expand therapies, treatments, and devices for people suffering from various eye diseases and disorders.