A nurse is teaching a client who has a new prescription for brimonidine to treat open-angle glaucoma. Which of the following client statements indicates an understanding of the teaching?

A. Brimonidine should not be instilled while wearing contact lenses; the client should remove them and wait at least 15 minutes before reinsertion. B. Mild eye irritation, stinging, or burning is a common side effect of brimonidine and is an expected finding. C. Brimonidine is used as a long-term treatment for open-angle glaucoma; it is not discontinued after a short course like 3 weeks. D. Brimonidine does not change eye color; this is an effect associated with prostaglandin analogs such as latanoprost.