The iris of your eye is a muscle, and like all muscles, they expand and contract to control the size of your pupil. When the pupil changes size, the pigments in your iris compress and expand, which can change your eye color. According to the Fort Lauderdale Eye Institute , extreme emotions can change your eye color.
When you experience a strong emotion, your body releases a hormone that causes your pupils to expand or contract. This hormone, combined with the sudden change in pupil size, can change the hue of your eyes. Glaucoma medications called prostaglandins can cause permanent eye color changes, usually making eyes a darker shade of their natural color over time.
Arcus senilis is a hazy blue or white ring on the cornea from a build-up of a natural fatty substance called lipids. Most seniors have some degree of arcus senilis. It's very rare and needs medical treatment. Hyphema is when there is blood inside the eye, usually from an injury or after surgery. A cataract is a clouding of the lens of the eye , behind the pupil, that makes it look milky or grey. Cataracts are common with aging and affect vision. In most cases, they can be successfully removed with surgery.
Most people will have the same unique eye color from the time they're learning to walk until they're seniors. During the first months of life, an infant's eyes may look more blue-grey and then get darker as eye pigment develops. M ost babies have the eye color that will last their lifetime by the time they're about nine months old. But a few things can change eye color at any age.
If you notice any distinct color change, in either of your eyes, see an ophthalmologist right away. About Foundation Museum of the Eye. Eye Facts and Science. By Kate Rauch. Edited By Vered Hazanchuk. Iris Color Changes Iris freckles are small brown spots on the surface of the iris that are often related to sun exposure. Iris heterochromia in a patient with Fuchs' Heterochromic Iridocyclitis. Note the lighter colored iris in the affected right eye.
A cataract—cloudy lens behind the pupil—seen in an adult eye. Next Facts About Tears. Find an Ophthalmologist. Advanced Search.
Ask an Ophthalmologist. Browse Answers. Free Newsletter Get ophthalmologist-reviewed tips and information about eye health and preserving your vision. Also of Interest. But when your eyes appear to change color suddenly, or even over time, the wonder that is eye color becomes significantly more intriguing.
Where does eye color come from, and how can it change? Does this change happen naturally or do outside factors influence how your eye color appears? When you were born, you likely had blue eyes. Melanin is a pigment that gives your eyes, skin, and hair their color. Once your body became exposed to light, it started to produce melanin, which in turn changed the color of your hair, skin, and eyes.
However, genetics also factor into skin, eye, and hair color. For example, if your parents have darker skin and hair, then you likely had those same dark pigments in your skin and hair when you were born.
Your eye color, however, probably took a little more time to develop. The longer your eyes were exposed to light, the more melanin pigments your irises produced. But depending on your genetics, your eyes could have turned dark brown.
So regardless of how much or little light exposure you have, your genes determine how light or dark your eye color is. However, several factors can influence your eye color and whether or not it changes to a different pigment. As previously mentioned, exposure to light causes your body to produce more melanin.
Even if your eye color has set, your eye color could slightly change if you expose your eyes to more sunlight.
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