22. Choice C is the correct answer. Adie pupil is when the affected dilated pupil fails to react or reacts slowly to light. It responds to convergence. It is caused by impairment of postganglionic parasympathetic innervation to the sphincter pupillae muscle or ciliary malfunction. Miosis is pupillary constriction usually less than 2 mm. Argyll Robertson Pupil is when there is bilateral miotic, irregular shaped pupils that fail to constrict with light and retain constriction with convergence. Pupils may or may not be equal. Sometimes seen in neurosyphillis.
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