There is no scientific evidence that suggests that humans can have purple eyes. However, there are some rare conditions that can cause a person's eyes to appear purple. One condition is called albinism, which is a genetic disorder that affects the production of melanin in the body. People with albinism often have very pale skin and hair, and their eyes may appear pink or purple when exposed to sunlight. Another condition that can cause purple eyes is Waardenburg syndrome, which is a rare genetic disorder that causes abnormalities in the development of certain tissues and organs, including the eyes. People with this condition may have blue or violet-colored eyes.