Which wavelength stimulus is NOT primarily involved in the Nagel Anomaloscope test?

In the context of the Nagel Anomaloscope test, the primary goal is to assess an individual's ability to match colors and their sensitivity to different wavelengths of light, which is particularly important for diagnosing color vision deficiencies.

The Nagel Anomaloscope primarily utilizes stimuli at specific wavelengths, which are critical for evaluating red-green color deficiencies. The two primary wavelengths in this test are 546 nm, associated with green light, and 590 nm, which corresponds to yellow light. The test typically involves a mixture of these wavelengths, allowing individuals to adjust the balance of red and green light to achieve a match with a reference yellow light.

The wavelength of 495 nm is also used within the broader analysis of color vision; however, it is not one of the primary stimuli in the Nagel Anomaloscope test itself. In contrast, the angle of the test focuses on the two key wavelengths mentioned above. Meanwhile, 670 nm represents a deeper red light which is used in the context of color perception but is not directly a part of the essential mechanism of the test either.

Thus, identifying the wavelength stimulus that is not primarily involved in the Nagel Anomaloscope test underscores the importance of recognizing how various wavelengths interact to assess specific types of color vision deficiencies