![]() ![]() The inflammation causes the covering of the eye (conjunctiva) to look red instead of white. It is caused by infection, exposure to toxins, or trauma to the eye. Uveitis is inflammation of the middle layer of the eyeball. Studies have also found that the darker your iris color is, the more at risk you are for cataracts. The cloudiness of the lens can also change the color of the iris. They are a common occurrence with aging and can significantly affect vision. Some of these conditions require treatment to prevent serious damage to the eye.Ī cataract is a clouding of the lens, which makes the pupil look grey. There are several conditions that can cause significant changes in iris color. Conditions Associated With Iris Color Change Smaller pupils leave much of the iris uncovered, and the contrast of the black can make the color appear lighter. Wide pupils cover more of the iris, so the color can look darker. As your pupils dilate or shrink, the color of the iris around them can look different. ♦ Dilation of pupils: Your pupils change size all throughout the day as the light intensity around you changes. Happiness and anger cause your eye color to become more vibrant, while sadness can make eye color brighter. These alterations cause pupil size to change as well as iris color. Happiness, sadness, anger, and other emotions all alter hormones in the body. ♦ Emotions: Your iris can change colors as your emotions change. This can reveal colors in your eyes that you may not have previously noticed. Also, sunlight is more powerful than artificial lighting. Even if your eye color is already set, the additional light can cause your eye shade to appear darker. ♦ Increased sunlight exposure: Sunlight exposure increases melanin production. Although it may seem strange, these changes in iris color are not a cause for concern. There are several factors that can temporarily alter the pigments in the iris. Once your eye color is fully developed, it typically does not change. The amount of light the eyes are exposed to also influences this, but not as much as genetics. Your genetics determines the color your eyes will turn during the first years of life. By the age of three, your eye color is permanent and usually will not change. Babies' eyes are usually born with light blue or gray eyes. The iris contains pigments that determine your eye color. Sometimes the iris changes color more significantly, and this needs to be addressed with your doctor. The iris typically darkens in color during the first years of life. It is also responsible for controlling the size of the pupil and the amount of light reaching the retina. The iris is the part of your eye that displays color, and the color is determined by genetics. ![]()
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