Antiallergics and drugs used in anaphylaxis

Bacterial conjunctivitis. Dry eye. Retinal detachment. Allergic conjunctivitis . A patient with glaucoma presents to the pharmacy to pick up a new prescription for . brimonidine. 0.1% eye drops. The patient already uses . timolol. 0.5% eye drops and asks for an advice on when to administer each drop. How do you instruct this patient? ................
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