RALPH EAGLE / SCIENCE PHOTO LIBRARY RALPH EAGLE / SCIENCE PHOTO LIBRARY
Diagnosis of glaucoma. View of a Goldmann non- contact tonometer in use. This type of tonometer directs a short, gentle blast of air against the surface of the eye, and allows the opthalmologist to view the effect. This gives a good indication of the internal pressure of the eye (intraocular pressure), and is used in the diagnosis of disorders such as glaucoma.
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