The _______ test is a color perception test for red-green color deficiencies.

A. Hemiplegia
B. Ishihara
C. Lalopathy
D. None of the above

Explanation:

The Ishihara test is a color perception test for red-green color deficiencies, the first in a class of successful color vision tests called pseudo-isochromatic plates (“PIP”). It was named after its designer, Shinobu Ishihara, a professor at the University of Tokyo, who first published his tests in 1917.