An Ophthalmologist is a surgical and medical expert that focuses on the function, structure, diseases, and treatment of the eye. Ophthalmologists receive more training than Optometrists so that they can perform surgery and other procedures on the eye. Some of the things that Ophthalmologists do is treat imperfections of the eye through medical or surgical mens, prescribe glasses to patients, and perform surgeries by hand with some computerized surgical tools or lasers.