The white part of your eye, called the sclera, can become discolored for a variety of reasons. Here are some common causes:
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Jaundice: If the entire sclera turns yellow, it is often a sign of jaundice. This condition is caused by a buildup of bilirubin, a substance produced when old red blood cells are broken down. Normally, the liver filters bilirubin and turns it into bile. However, if the liver isn't functioning properly, bilirubin can build up in the blood and deposit in the sclera, causing a yellowish hue.
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Eye Infections: Redness in the sclera can be a sign of an eye infection like conjunctivitis (pinkeye). This infection causes inflammation of the conjunctiva, the clear membrane that covers the white of the eye and the inside of the eyelids. Other symptoms of conjunctivitis can include itching, burning, and a watery discharge.
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Uveitis: This condition is a type of inflammation of the middle layer of the eye, which can cause redness, pain, and blurred vision.
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Episcleritis: This is inflammation of the tissue just beneath the conjunctiva. It can cause redness and pain, but it is usually not as severe as uveitis.
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Allergies: Allergic conjunctivitis can cause redness, itching, and watery eyes. This is a reaction to allergens, like pollen or dust mites.
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Eye Strain: Prolonged screen time or other visual strain can cause blood vessels in the sclera to dilate, making the whites of the eyes appear red.
It is important to note that discolored eyes can be a sign of a serious medical condition. If you experience any sudden or unexplained changes in your eye color, it's crucial to see a doctor for a diagnosis and treatment.