Final answer:
One of the first signs of macular degeneration is a black spot in the center of the vision. Macular degeneration is a common cause of blindness, and it occurs due to the death of cells in the macula. The disease progresses over time and can eventually lead to total blindness.
Step-by-step explanation:
One of the first signs of macular degeneration is a black spot in the center of the vision. Macular degeneration, specifically age-related macular degeneration (AMD), is a common cause of blindness. It occurs when cells of the macula, which is the oval-shaped pigmented area near the center of the retina, start to die. As the disease progresses, the black spot in the vision grows outward and eventually leads to total blindness.