Timolol (Timoptic) Ophthalmic Drops Are Prescribed for a Patient with Open-Angle

Timolol (Timoptic) ophthalmic drops are prescribed for a patient with open-angle glaucoma. After using the drops for several days, the patient tells the nurse that the eyedrops cause eye burning and visual blurriness for a time. The best response by the nurse to the patient's complaint is,

A) "These are normal side effects of the drug, which should become less noticeable with time."
B) "If you occlude the puncta after you administer the drops, it will help relieve these side effects."
C) "These symptoms are caused by glaucoma and may indicate a need for an increased dosage of the eyedrops."
D) "The drops are uncomfortable, but it is very important for you to use them as prescribed to retain your vision."