(hōlm'grĕn), a test for color blindness, in which the subject matches variously colored skeins of wool.
Holm·gren wool test
(hōlm'gren wul test) A test for color blindness, in which the subject matches variously colored skeins of wool.
Holmgren,
Alarik F., Swedish physiologist, 1831-1897. Holmgren wool test - a test for color blindness in which the subject matches variously colored skeins of wool.