I was surprised to find many recent studies about eye color. I thought I'd share some of the facts I learned. Here are some quotes from Wikipedia and the Eye Doctor Guide:
- The genetics of eye color are complicated and eye color is determined by multiple genes. The once-held view that blue eye color is a simple recessive trait has been shown to be wrong.
- Hazel eyes may contain specks of amber or gold, they usually tend to comprise many other colors, including green, brown and orange. Also, hazel eyes may appear to shift in color and consist of flecks and ripples; while amber eyes [which are considered different from "brown"] are of a solid gold hue.
- In 2008, research revealed that people with blue eyes have a single, common ancestor. Scientists tracked down a genetic mutation that leads to blue eyes. The mutation occurred between 6,000 and 10,000 years ago; researchers state that before then, blue eyes did not exist.
- Violet eyes result when there is not enough pigment in the eye to color the blood vessels so they shine through causing a violet like color.