National Registry of Certified Medical Examiners (NRCME) DOT Practice Exam

What condition is suggested by central vision loss?

1. Macular degeneration

2. Cataracts

3. Glaucoma

4. All of the above

The correct answer is: Macular degeneration

Central vision loss is primarily associated with macular degeneration, which affects the central part of the retina known as the macula. This area is responsible for sharp, detailed vision that is crucial for tasks like reading and recognizing faces. As the macula deteriorates, individuals experience a decrease in central vision while peripheral vision often remains intact. Cataracts and glaucoma, while they can affect vision, typically do not lead to central vision loss in isolation. Cataracts generally cause blurred or cloudy vision that affects all types of vision rather than specifically the central vision. Glaucoma primarily affects peripheral vision initially, potentially leading to tunnel vision in advanced stages, but central vision is usually preserved until the disease has progressed significantly. Focusing on the impact of each condition helps to clarify why macular degeneration is the correct choice, as it directly impacts the central vision which aligns with the question's focus.