The Nurse Is Reinforcing Teaching for a Patient with Open-Angle

The nurse is reinforcing teaching for a patient with open-angle glaucoma. Which of the following statements is most important to include in the patient teaching?

A) Compliance with drug therapy is essential to prevent loss of vision.
B) Damage to the eye caused by glaucoma is reversible in early stages.
C) Regardless of treatment, peripheral vision will be eventually lost.
D) Eye pain is experienced until the optic nerve atrophies, causing blindness.