an instrument for measuring the degree of exophthalmos.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
An instrument to measure the distance between the anterior pole of the eye and a fixed reference point, often the zygomatic bone.
[exophthalmos + G. metron, measure]
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