One is Chester (My Rottie) and another is Max (Golden Retriever). Olivia Wilde, for instance, has blue eyes with rings of brown around the center. Segmental heterochromia appears as a different patch of color in only one iris, and complete heterochromia is the most iconic two irises of different colors. National Different Colored Eyes Day on July 12 is all about heterochromia iridum. There are many National observances about eyes, including January Glaucoma Awareness Month, May Healthy Vision Month, and March Workplace Eye Wellness Month. It can happen in a few different ways and for different reasons. All About Vision and AllAboutVision.com are registered trademarks of AAV Media, LLC. Keep in mind it can be very hard to discern the majority of people actually dont notice the condition in someone else, and it can be very easily mistaken. There are a few different causes and varieties of heterochromia. The content on this blog is not intended to be a substitute for professional medical advice, diagnosis, or treatment. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Advance Local. Based on the frequency of heterochromia among familial generations, one study concluded that heterochromia may in fact be an inherited condition. Does heterochromia run in families? Heterochromia (different-colored eyes) is when a persons irises are different colors. People with this condition may have different colors within one eye (for example, the iris may be half one color and half another). Collagen fibers in the eye scatter the light, and it reflects off of the surroundings, making eyes appear blue. Heterochromia - American Academy of Ophthalmology. However, if you notice a change in color of your eyes, you should come in for an appointment or reach out to your healthcare professional. An interesting pair of eyes can make a lasting impression, but the most unforgettable are probably the ones that dont match. Registration on or use of this site constitutes acceptance of our User Agreement, Privacy Policy and Cookie Statement, and Your California Privacy Rights (User Agreement updated 1/1/21.