A nurse is caring for a client who reports a decrease in central vision. The nurse should identify that this is a manifestation of which of the following visual impairments?

Rationale: A. Macular degeneration primarily affects the macula, the central portion of the retina responsible for sharp, detailed vision. A decrease in central vision is the hallmark symptom of this condition, often making tasks such as reading, recognizing faces, and driving difficult. Peripheral vision is usually preserved in early stages, which differentiates it from other visual impairments. B. Cataracts cause clouding of the lens, leading to blurred vision, glare, and difficulty seeing in low light. Cataracts generally affect overall vision rather than selectively impairing central vision. Therefore, a report of decreased central vision alone is not specific to cataracts. C. Diabetic retinopathy involves damage to retinal blood vessels, leading to spots, floaters, blurred vision, or vision loss. While it can affect central vision in advanced stages, the early manifestation is usually patchy or scattered visual changes, not isolated central vision loss. D. Glaucoma typically causes peripheral vision loss first, often progressing to tunnel vision if untreated. Central vision is preserved until the late stages, making glaucoma less likely to be the cause of a recent decrease in central vision.