Final answer:
An ophthalmologist is a physician who specializes in the study and treatment of diseases associated with the eyes.
Step-by-step explanation:
An ophthalmologist is a physician who specializes in the study and treatment of diseases associated with the eyes. They are experts in diagnosing and treating conditions such as cataracts, glaucoma, and macular degeneration. Ophthalmologists also perform eye surgeries, such as LASIK and cataract surgery, to improve visual acuity and correct vision problems.