Do you ever find it difficult telling people what your eye color is? You may not be alone in this. There are three types of heterochromia. The one of interest to me is central heterochromia as I have observed it in high frequencies among Rh negative individuals. So let me guess: Some of you might be unsure whether you have central heterochromia or simply hazel eyes… correct? Here is one explanation: With hazel eyes, the brown diffuses into the region with the green. The amount of diffusion varies from person to person. This diffusion makes it appear like the eyes change colors with different light sources and changes in surrounding colors. With central heterochromia, the areas of color are more … Continue reading Rh negatives may have an elevated frequency of central heterochromia