1-2 Dilation Lag

Identifier: 1-2 Title: Dilation Lag Subject: Dilation Lag; Horner Syndrome; Horner's Syndrome Description: Two examples of dilation lag (Horner’s syndrome). In the first example, the right pupil dilates much faster than the left pupil when the light is turned out. In the second example, the left pupil dilates much faster than the right pupil when the light is turned out. Discussion of methods of documentation, including video or still photographs. Demonstrates the use of noise to accentuate the anisocoria.