Final answer:
Macular degeneration causes damage to the macula, resulting in vision problems such as a black spot in the center of the person's vision.
Step-by-step explanation:
Macular degeneration is a condition that causes damage to the macula, which is an oval-shaped pigmented area near the center of the retina. In macular degeneration, the macula becomes damaged and starts to die, leading to vision problems. This can result in a black spot in the center of the person's vision, which grows outward as the disease progresses.