one for detection of imperfect perception of color, based on matching various strands of yarn.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
[Alarik F. Holmgren, Swedish physiologist, 1831–1897]
An obsolete test in which the patient matches colored skeins of yarn to test for color blindness.
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