Deficits of Pupil Control

Question 1

Loss of sympathetic innervation from superior cervical ganglion
Unilateral ptosis, miosis, anhidrosis

Answer 1

Horner’s syndrome

Question 2

Small pupil; fixed and nonreactive to light; neurosyphilitic lesion between pretectal and EW nuclei

Answer 2

Argyll Robertson pupil

Question 3

Decreased or absent light response; disorder of parasympathetic postganglionic innervation; sphincter is hypersensitive to cholinergic agents

Answer 3

Adie Tonic pupil

Question 4

Absent direct response due to optic nerve damage; mild constriction in both eyes when light hits affected eye; full consensual constriction when light hits unaffected eye
Afferent problem, not efferent problem

Answer 4

Marcus Gunn pupil