Facts About Eye Color

The coloring of the eyes is unique to each individual. Like snowflakes or fingerprints, no two are the same. Approximately 79 percent of the population has brown eyes, making it the most common human eye color. Other colors include blue, green, and even less common, hazel and blue-gray. Genetic research tells us brown is a dominant eye color and blue is recessive, however, this does not technically mean two blue-eyed parents will have blue-eyed children. Often times brown dominates blue for eye-coloring and it can be challenging to predict.

Do Eyes Change Color?

An interesting fact about eyes is that they can change color over time, especially in young children. Most babies are born with blue eyes and then, as melanin forms, they develop into their natural color after about 3 years. This is a common occurrence.

But what about eye color changing later in life, and how does one know if there's a possible health problem? Slight eye coloring changes due to the color of your clothing is fairly normal and harmless, but if you experience a drastic change in eye color that is obvious, you need to consult your eye doctor . Listed below are a few common eye conditions that may cause the iris to change color. Some of these conditions may be caused by cataracts or eye inflammation:

Iridocorneal Endothelial (ICE) Syndrome - This condition causes the iris to change color. It normally only develops in one eye but can lead to glaucoma.

Pigment Dispersion Syndrome - This causes pigment loss. It mainly affects younger males with nearsightedness. This also leads to a type of glaucoma. Treatment helps lessen the symptoms.

Uveitis - This condition is an inflammation of the eye caused by harmful exposure to toxins, infections, or other types of trauma. This requires immediate attention.

Can Eyes Be Two Different Colors?

Having two different colored eyes is rare, but possible. This phenomenon is called heterochromia . For the most part, heterochromia is harmless, but it can result from an underlying health condition. A few things that may cause heterochromia include eye injuries, eye surgery, or bleeding in the eye. If you think you or your child may be experiencing a condition like this, visit your ophthalmologist.

If you are experiencing any unusual symptoms or changes regarding your vision or eye coloring, immediately see your eye doctor. Our eyes are a very complex part of our body and require vigilant care.