Hardy-Rand-Ritter test

Har·dy-Rand-Rit·ter test

(har'dē rand rit'ĕr),
a test for color vision deficiency using pseudoisochromatic cards.

Har·dy-Rand-Rit·ter test

(hahr'dē rand rit'ĕr test)
Assessment of color vision deficiency using pseudoisochromatic cards. These excellent cards have not been reprinted by the American Optical Company because the plates were accidentally destroyed long ago.

Hardy,

LeGrand, U.S. ophthalmologist, 1895-1954.
Hardy enucleator
Hardy-Rand-Ritter test - a test for color vision deficiency.

Rand,

Gertrude, U.S. visual psychologist, 1886-1970.
Hardy-Rand-Ritter test - see under Hardy, LeGrand