A pupil That Won’t Constrict : A Case of Adie’s Tonic Pupil

Adie's tonic pupil, the round unilateral tonic pupil, is a neuro-ophthalmologic disorder with dilation and no light response. Although usually idiopathic, it may be associated with infection, inflammation, and postganglionic paraneoplastic nerve damage. The diagnosis is made by observing a miotic response after dilated pilocarpine instillation. Spontaneous recovery depends on etiological factors. J.Natl.Inst.Ophthalmol.2025;8(1): 79-81