The iris is the colored part of the eye that controls the pupil size and the amount of light that enters into the eye. It is the most visible part of it. Normal eye colors range from the darkest shades of brown to the lightest tints of blue. Approximately only 8% to 10% of the global population have blue eyes.
The inheritance patterns of iris color is a heavily studied area. Eye color is controlled by three basic genes. Researchers understand two of those genes really well and one of them is still a bit of a mystery. These genes control the development of green, brown and blue eye color. Gray, hazel, and other combinations are more difficult to predict.
This domed 1 ounce silver proof coin captures the magic and attraction of a blue eye. Discover the combination of sophisticated coloring and shimmering proof areas which allow the ocean blue eye to become real.