A nurse is teaching a client who has diabetes mellitus about diabetic retinopathy. Which of the following statements should the nurse make to the client?

A. Increased intraocular pressure causes glaucoma, not diabetic retinopathy. B. Clouding of the lens is related to cataracts, not diabetic retinopathy. C. Seeing spots or floaters is a common symptom of diabetic retinopathy. D. Diabetic retinopathy requires more frequent eye exams (typically annually) for early detection.