Anomaloscope

[1] The parameter values at match define the type and strength of the color vision defect.

[1] The first anomaloscope was invented by the German ophthalmologist and physiologist Willibald A. Nagel (1870–1911) who named it Anomaloskop in 1907.

Earlier blue-yellow matches had problems with large variance in results from color normals.

The Moreland match improved has a much lower variance for color normals.

As early as 2000, researchers attempted to accurately simulate the anomaloscope on a RGB CRT monitor.