CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Diagnosis of glaucoma. View of a Goldmann non-contact tonometer in use on the eye of an elderly male patient. This type of tonometer directs a short, gentle blast of air against the surface of the eye, allowing the opthalmologist (at left) to view the effect. In this way, internal (intraocular) pressure of the eye can be measured as a diagnostic test for glaucoma. Glaucoma is a condition in which loss of vision arises because of an abnormally high pressure inside the eye. Glaucoma occurs increasingly with age and can usually be treated with eye drops.
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