what does it mean when your eyes go lighter?
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This is because eye color is determined by your genes and the melanin level on your body. As you grow up, the melanin level increases around your pupil, making the eye darker. However, 10-15% of Caucasian eyes change to a lighter color as they age, as pigment in the iris changes or degrades.
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The color of your eyes depends on how much of the pigment melanin you have in your iris—the colored part of your eyes. ... Besides giving our eyes color, melanin helps protect them from the sun. Light eyes are much more sensitive to the sun's harmful rays than darker eyes because they have less pigment.
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Dry eye. If the quantity or quality of your tears is not enough to lubricate your eye, you're probably suffering from dry eye. Dry eye can make your eyelids feel heavy. It's also commonly combined with other symptoms such as stinging and redness.
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Eye strain occurs when your eyes get tired from intense use, such as driving a car for extended periods, reading, or working at the computer. If you have any eye discomfort caused by looking at something for a long time, you can call it eye strain.
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The more melanin in your iris, which is the colored area surrounding the pupil, the darker your eye color will be. ... Light eyes such as blue, green or grey are more sensitive in sunlight. Most people are sensitive to sudden light, such as walking out of a dark hallway on a sunny day.
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Light eyes such as blue, green or grey are more sensitive in sunlight. Most people are sensitive to sudden light, such as walking out of a dark hallway on a sunny day. ... Age-related macular degeneration is more common in Caucasians than African Americans, as eyes with less pigment allow more light in the eye.
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People who have light-colored eyes are at a slightly higher risk of experiencing light sensitivity than people with darker eyes, especially dark brown eyes. This is because the melatonin in eye color can protect against some ultraviolet (UV) light and reduce how impactful bright light can be on the retina.
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Your pupils get bigger or smaller, depending on the amount of light around you. In low light, your pupils open up, or dilate, to let in more light. When it's bright, they get smaller, or constrict, to let in less light. Sometimes your pupils can dilate without any change in the light.
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The iris allows more light into the eye (enlarging or dilating the pupil) when the environment is dark and allows less light into the eye (shrinking or constricting the pupil) when the environment is bright.
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If you have light sensitive eyes you may feel that you're blinded by car headlights and can even struggle with light contrast after dark. These difficulties can be perfectly normal. In fact, everyone's pupils constrict when faced by bright lights, and different people's eyes adapt at different speeds.
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According to some studies, there is a slight difference in vision capabilities between people with light and dark colored eyes. Lighter eyes, such as blue or green eyes, have less pigment in the iris, which leaves the iris more translucent and lets more light into the eye.
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But in some cases, it may be a temporary bilirubin buildup or a nutrient deficiency, as lacking vitamins like B-12 has been linked to yellowing of the eyes because of changes in red blood cell production. Once the underlying issue is treated, yellow eyes often go away.
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The lack of nutrients in the diet, or the lack of a balanced diet, can contribute to the discoloration of the area under the eyes. It is believed that iron deficiency can cause dark circles as well.
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The lack of this pigment results in blue eyes, some pigment gives green and lots of pigment gives brown eyes. So light brown eyes just have a bit less melanin than darker brown eyes. All of the different shades of eye color happen the same way.
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Scientifically, yes lighter colored eyes are more sensitive to bright lights and the sun because a lighter color iris allows more light to pass into the retina of the eye. Lighter color eyes such as blue or light green are intact missing a pigment called melanin or have much less of it than a darker brown or hazel eye.
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The whites of your eyes (called the sclera) turn yellow when you have a condition called jaundice. The whites of your eyes might turn yellow when your body has too much of a chemical called bilirubin, a yellow substance that forms when red blood cells break down. Normally, it's not a problem.
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Tired eyes can also be the result of lack of sleep, reading without taking breaks, exposure to dry air, straining to see in dim lighting and having uncorrected vision. Once you've isolated the possible cause or causes of your tired eyes, make some changes to give your eyes a bit more rest.