A. Good Light Reaction in Both Eyes
- Simple anisocoria - no dilation lag of smaller pupil
- Horner Syndrome [1]
- Lesion of sympathetic neurons controlling ocular structures
- Ptosis (eyelid droop), miosis (pupil constriction), anhidrosis (lack of tearing)
- Preganglionic / Central
- Postganglionic
- Distinguish by 1% hydroxyamphetamine test
B. Poor light Reaction in One Eye
- CN III Palsy
- "Atropinic Mydriasis"
- Iris Damage
- Adio's Tonic Pupil
- Acute closed angle glaucoma
References
- Miller NR and Newman NJ. 2004. Lancet. 364(9450):2045