Color Vision Test for Color Blindness

The provider uses an optical instrument, such as a Nagel anomaloscope, that uses long wavelengths of yellow–green light, which a patient adjusts, to match a predetermined ratio of red to green light; this test is used to determine whether the patient has color blindness, typically red–green color blindness. Choose a location to see hospital-reported price summaries. This page does not show national, sample, or aggregate pricing.