Cranial Nerve III
Function: Eye movement, Pupil constriction
Test: Have Pt. hold head still while following your finger in H pattern. Test pupil response with penlight.
Diagnosis: Pinpoint pupils suggest opiate OD or trauma to pons; Dilated pupils suggest anxiey, seizure, or stimulant use (coke, meth, etc); Sluggish or fixed pupils suggest brain injury or swelling.