Ophthalmologists are physicians who have undergone extensive training in the diagnosis and treatment of medical problems that arise in the eye. In addition, ophthalmologists are specially qualified to surgically treat certain eye conditions such as cataracts and glaucoma. If you have experienced blurred vision that has not been corrected by eye glasses, are over the age of 55 with a family history of eye diseases, or have a medical condition such as diabetes, you should be screened yearly by an ophthalmologist in order to catch potentially blinding eye problems and to prevent irreversible damage.