A lantern used to test recognition of coloured signals; it displays a single light with colour filters in rotating disks that can be modified to simulate conditions of weather and atmosphere. This test for colour blindness was officially adopted in Great Britain in 1915 in place of the Holmgren wool test, but is now seldom used. ... (05 Mar 2000) Ã...
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http://www.encyclo.co.uk/local/20973
Type: Term Pronunciation: ed′rij grēn Definitions: 1. a lantern used to test recognition of colored signals; it displays a single light with color filters in rotating discs that can be modified to simulate conditions of weather and atmosphere. This test for color blindness was officially adopted in Great Britain in 1915 in place of the H...
Found on
http://www.medilexicon.com/medicaldictionary.php?t=47893
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