Accommodation Reflex of the Eye | Definition, Purpose & Test

Eyecare Corner on Instagram: "👁️🔦 Afferent Pupillary Defect (APD) What it is: An abnormal pupillary light reflex caused by asymmetric optic nerve or severe retinal disease. Also called a Marcus Gunn pupil. How to detect: • Swinging flashlight test → pupil dilates (instead of constricting) when light is directed into the affected eye. Causes: • Optic neuritis (MS, infections, inflammation) • Ischemic optic neuropathy • Advanced glaucoma • Retinal detachment • Central retinal artery or vein occl