Question 2

A 16 year old male presents as a referral from his pediatrician for asymmetric pupils. External exam is above. The anisocoria is greater in dark than light conditions. Extraocular movements are full. Vision is 20/20 OU. No history of trauma. Apraclonidine testing in this patient showed reversal of his anisocoria. Which action of apraclonidine is responsible for the dilation of the normal pupil?

Alpha-2 agonist

Alpha-2 antagonist

Alpha-1 agonist

Alpha-1 antagonist

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Question 2