Human pupil

disease characterized by miosis (a constricted pupil), partial ptosis (a weak, droopy eyelid), apparent anhydrosis (decreased sweating), with apparent enophthalmos (inset eyeball)

symptom of human disease

neurological disorder characterized by a tonically dilated pupil

medical sign observed during an eye test

eye condition where the iris adheres to either the cornea or lens

Pupillometer, also spelled pupilometer, is a medical device intended to measure by reflected light the size of the pupil of the eye.

diagnostic procedure

Pupillometry, the measurement of pupil size and reactivity, is a key part of the clinical neurological exam for patients with a wide variety of neurological injuries. It is also used in psychology.