Abnormal Pupils Made Easy 🔹 Afferent Pathway Abnormalities Marcus Gunn pupil (Relative Afferent Pupillary Defect – RAPD) 🔹 Efferent / Parasympathetic Abnormalities Oculomotor nerve palsy (CN III palsy) – dilated, non-reactive pupil Adie’s (Tonic) pupil Pharmacologic mydriasis 🔹 Sympathetic Pathway Abnormalities Horner syndrome – miosis, ptosis, anhidrosis 🔹 Midbrain / Brainstem Syndromes Argyll Robertson pupil – light-near dissociation Light-near dissociation (general category) Parinaud (dor