The Eyes Have It

Pupils
The pupil exam requires careful technique to assess these features:

  1. The size of the pupils in dim illumination. (You are looking for a difference in pupil size, called anisocoria.)

  2. The reactions of the pupils to direct light. (You are looking for a diminished constriction.)

  3. The reactions of the pupils to a swinging light. (You are looking for a relative afferent pupil defect.)

Here is how to do pupil testing.

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The Eyes Have It
An interactive teaching and assessment program on vision care
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Originally created by Jonathan Trobe, M.D., University of Michigan Kellogg Eye Center
© 2009 The Regents of the University of Michigan

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