A nurse is caring for a client who has a new diagnosis of primary open-angle glaucoma and a prescription for timolol ophthalmic drops. For which of the following adverse effects should the nurse monitor the client?.

Choice A rationale: Timolol is a non-selective beta blocker that can slow heart rate, leading to bradycardia. Choice B rationale: Seizures are not a common side effect of timolol. Choice C rationale: Timolol is used to decrease intraocular pressure, not blood pressure. Choice D rationale: Anemia is not a known side effect of timolol.