Holmgren yarn test
Holm·gren yarn test
noun \ˈhōm-grən-ˈyärn-, ˈhōlm-\Definition of HOLMGREN YARN TEST
: a method of testing color vision by the use of colored wool yarns—called also Holmgren test, Holmgren wool test
Biographical Note for HOLMGREN YARN TEST
Holm·gren \ˈhȯlm-ˌgrān\ Alarik Frithiof (1831–1897), Swedish physiologist. Holmgren introduced his test for color blindness in an 1874 article.
