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Optometrists can administer drugs to patients that might aid in diagnosis of vision problems and prescribe drugs to treat some eye diseases. Optometrist might refer patients to other health practitioners when they diagnose conditions caused by systemic diseases such as diabetes and high blood pressure. Optometrists might have a general practice but there are those who specialize in elderly, children, or partially sighted persons who need specialized visual devices. An optometrist might prescribe eyeglasses and contact lenses. Optometrists might provide vision therapy and low-vision rehabilitation. They might go over test results and develop a treatment plan. They might test patients' visual abilities: depth and color perception, and the ability to focus and coordinate the eyes.
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