Which of the following is NOT true regarding the Farnsworth D-15 color test?

The Farnsworth D-15 color test is primarily used for assessing color vision proficiency. It effectively evaluates both congenital and acquired color deficiencies, making it a valuable tool in clinical settings.

When considering the characteristics of the test, it is designed to identify specific types of color vision deficiencies, particularly protan and deutan defects, which are forms of red-green color blindness. It is also applicable in diagnosing tritan defects. However, while the test can provide insights into an individual's ability to distinguish between colors, it does not reliably differentiate between dichromats and anomalous trichromats. This is because individuals with these conditions may have similar performance on the D-15 test, leading to a lack of clarity in distinguishing between them.

Thus, the statement that the Farnsworth D-15 can be used to distinguish dichromats from anomalous trichromats is not true, as it does not create enough of a distinction between the two groups based solely on the results of the D-15 test.