Final answer:
Ultraviolet light from the sun can damage cells in the human eye, leading to mutation, cell death, cataracts, and skin cancer.
Step-by-step explanation:
Ultraviolet light from the sun can affect the cells of the human eye in several ways. UV-B light, which reaches the Earth's surface due to reductions in stratospheric ozone, can interact with biomolecules like DNA in cells and cause damage. This can lead to mutations and cell death, and can also cause cataracts, a clouding of the lens in the eye that can lead to poor vision or blindness. UV-B light is also known to cause certain types of skin cancers, including malignant melanoma.