A nurse is providing education for a client who has glaucoma. Which of the following statements should the nurse include in the teaching?

Rationale: A. Glaucoma eye drops do not restore lost vision; they lower intraocular pressure to prevent further optic nerve damage. B. Glaucoma usually results from impaired outflow (drainage) of aqueous humor, not decreased production. C. Untreated glaucoma leads to progressive optic nerve damage and irreversible blindness, making lifelong treatment essential. D. Glaucoma typically causes gradual loss of peripheral vision; double vision is not a hallmark symptom.