Pupil test video review. During the examination, and while fixating on the red target, each eye is exposed to a screen of different brightnesses during the test duration. At the end of the test, you can revisit the hub where the test results are displayed. At the upper part of the results, you can see the intensity of the relative afferent pupillary defect (RAPD) and in which eye OD or OS. Below are the pupil measurements of each eye during all stages of the test.