They prescribe treatment to preserve, restore, and improve vision. Optometrists may use drugs to examine eyes. In some states, they may also use drugs to treat eye disorders. Optometrists use computerized instruments to make diagnoses. These instruments allow technicians to do some of the tests that previously were performed by optometrists.
Some optometrists specialize in one area, such as contact lenses or vision therapy.
Some specialize in working with one type of patient, such as children or the elderly. The tasks of optometrists, opticians, and ophthalmologists are distinct. Ophthalmologists are doctors who specialize in providing medical and surgical care for eyes. Most optometrists are in private practice. Thus they run an office.