Which symptom should a nurse advise a patient taking timolol to report?

Timolol is a non-selective beta-blocker commonly used in the treatment of glaucoma and ocular hypertension, and it works by reducing intraocular pressure. Patients taking timolol should be monitored for any significant changes in their vision, as this could indicate potential adverse effects or complications related to the medication. A change in vision, whether it be blurred vision, sudden loss of vision, or other significant alterations, can signify a serious reaction and requires immediate medical attention.

Other symptoms, such as minor eye irritation, may be common and not indicative of a serious issue, while a severe headache or dry mouth, although concerning, may not directly relate to the medication's primary side effects or its intended use. Recognizing and reporting a change in vision is crucial for the timely management of any underlying problems that could arise from the use of timolol, thereby ensuring the patient's safety and the effectiveness of their treatment.