Spontaneous cyclic segmental sphincter spasms in an Adie's tonic pupil.
A 43-year-old woman with bilateral Adie's tonic pupils had a segment of one iris sphincter that contracted spontaneously every few seconds, but was not influenced by light, near vision, or eye movements.
D000270:Adie Syndrome / Q000150:complications*; D000328:Adult; D005260:Female; D006801:Humans; D007498:Iris