Richard C. Allen, MD, PhD, FACS
Additional Notes: Length 01:06
The pupil exam first determines the size of each pupil in ambient light. A pupil gauge should be used to compare the size of the patient's pupils to a quantitated size of a black circle. In this case, the pupils measure approximately 3.5 mm in diameter.
A Finoff transilluminator is then used to determine the reaction of the patient's pupils to light. The transilluminator is then used to determine if there is any afferent pupillary defect. The light is switched between the two eyes to determine if there is any difference in reaction of the pupils to light between the two eyes.
The near response is then checked. The patient is asked to look at a fixation target as it is brought closer to induce accommodation. In doing so, the pupils should constrict, as is noted in this case.
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December 19, 2016