Unrelated to crusts
Parinaud's syndrome is a number of symptoms associated with damage to a particular brain region that controls eye
These primarily include difficulty looking upward, a constant downward gaze, inability to coordinate eyes, and pupil
malfunction.Parinaud's is caused by brain injury
; increased pressure inside the head, stroke
, or tumor. All are unrelated to conditions of the eye itself.
Answer assisted by Aaron Stupple, Medical Student