Which color vision test consists of pseudo isochromatic plates to assess red-green color anomalies?

The Ishihara color vision test is specifically designed to assess red-green color deficiencies, which are the most common types of color vision anomalies. This test features a series of pseudo iso-chromatic plates that use dots of various colors and sizes to create numbers or shapes that individuals with normal color vision can easily see, while those with red-green color deficiencies may struggle to identify.

The design of these plates capitalizes on color contrast and the distinctive way individuals with different types of color vision perceive colors. Each plate in the Ishihara test is tailored to elicit a response that can indicate the presence and type of color vision deficiency.

In contrast, while the Farnsworth-Munsell Test evaluates color discrimination through color arrangement, it does not employ the pseudo iso-chromatic method and is more comprehensive in examining various color vision deficiencies. The HRR Test is useful for identifying both red-green and blue-yellow deficiencies but uses a different approach than the Ishihara. Similarly, the City University Color Vision Test employs plates and designs that differ from the Ishihara plates. Thus, the distinct use of pseudo iso-chromatic plates specifically for red-green color anomalies is what makes the Ishihara test the correct answer in this context.