Fig. 7 Swinging flashlight test in two patients with mydriasis on side of orbital trauma. Pupils in bright (A) and dim (B) room lighting reveal normal responses on the uninjured side and minimal, if any response on the affected side. As the flashlight is swung from right (C) to left (D) and again to right (E), one can observe the normally reactive pupil. The patient on the left has no afferent pupillary defect, whereas the patient on the right has a left relative afferent pupillary defect.