Main Menu Back to Eye Exams Adaptive Equipment Braille Eye Disorders Eye Surgery History News Research & Clinical Studies Eye Diagram Glossary   Our Other Sites Bookstore Directory Other Resources Statistics Vision Health Resources Search All Sites Site Map Resource Links Third Party Links Eye Exams - Tonometry Tonometry is a procedure that measures the pressure inside the eyes. The test is used to screen for glaucoma, a disease in which pressure inside the eyes increases to the point that it impairs vision and if left untreated, may cause blindness. People over 40 years old, especially African Americans, are at the highest risk for developing glaucoma. If glaucoma is detected early, it can usually be treated, but it may go unrecognized for years because there usually are no symptoms. A tonometer measures pressure inside the eye and is one of several tests necessary to detect glaucoma. Image courtesy of the National Eye Institute For more information visit MEDLINEplus

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