A patient has been taking levocabastine ophthalmic drops, an antihistamine, for the treatment of allergic conjunctivitis. Which of the findings indicates that the patient is experiencing a side effect to this medication?


•Antihistamine eyedrops most commonly cause headache. Other side effects include burning, rhinitis sinusitis, blurred vision, and pruritus.

•Diplopia, tinnitus, and orange tears are not associated with the use of antihistamine eyedrops.

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