What should the nurse explain about pilocarpine to a patient with glaucoma?

Pilocarpine is a medication commonly used to treat glaucoma by reducing intraocular pressure. When administered, it can cause temporary side effects that might affect vision, particularly right after application. The medication works by constricting the pupil, which can lead to temporary blurred vision or difficulty focusing. Therefore, it is advisable for patients to avoid activities that require clear vision, such as driving or reading, immediately after using pilocarpine.

The other options do not correctly describe the implications of using this medication. Prolonged eye irritation is not a common expectation, and while some irritation might occur, it should not be chronic. The medication is intended to lower intraocular pressure, not raise it, contradicting the second option. Lastly, there is no requirement for patients to continue using pilocarpine for five years post-diagnosis; rather, it is often a part of ongoing management, depending on the individual patient's condition and response to the treatment.