The patient is ordered to take timolol for treatment of glaucoma. before administering this medication, what education should the nurse provide to the patient?
A. Measuring the heart rate because this medication can cause tachycardia
B. Performing punctal occlusion after instilling the eye drops
C. Avoid taking this medication with any other glaucoma medications.
D. Always administer this medication 1 minute before another type of glaucoma medication.