A RAPD can still be detected even if one pupil cannot change size (i.e. it is fixed), because of trauma, posterior synechiae or because dilating or constricting eye drops have been used (Figure 4). Having established that the pupil of one eye does not cha

The 'swinging light test' is used to detect a relative afferent pupil defect (RAPD): a means of detecting differences between the two eyes in how they respond to a light shone in one eye at a time.

Combine searches by placing the search numbers in the top search box and pressing the search button. An example search might look like (#1 or #2) and (#3 or #4)