Certified Ophthalmic Assistant Practice Exam

The color vision test that consists of a series of plates with a gray background and colored shapes is the:

1. Hardy-Rand-Ritter

2. Ishihara

3. Farnsworth-Munsell

4. Anomaloscope

The correct answer is: Hardy-Rand-Ritter

The correct answer is the Hardy-Rand-Ritter color vision test. This test utilizes plates that have a gray background with colored shapes designed to evaluate color discrimination abilities. It is particularly effective for detecting red-green color deficiencies, as individuals with these types of deficiencies may struggle to identify the colored images presented on the plates. The Ishihara test, while also a well-known color vision test, consists of plates with numbers or patterns formed by colored dots that are used to primarily assess red-green color deficiency, but it does not feature a gray background. The Farnsworth-Munsell test involves the arrangement of colored caps or chips based on hue, rather than the colored shapes on a gray plate, and is used to assess more detailed aspects of color discrimination. The Anomaloscope is a specialized device used to quantify color vision deficiencies based on matching wavelengths of light, and it does not involve the use of printed plates with backgrounds. Each of these tests serves a unique purpose, but the Hardy-Rand-Ritter test specifically matches the description provided in the question.