Glassy eyes are a symptom that can be caused by various factors, including health conditions, allergies, dehydration, and intoxication. When the eyes appear shiny or glazed, they are often described as glassy. Some common causes of glassy eyes include:
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Dry eyes: Tears lubricate the eyes, which become dry when there is limited or no tear production. Dry eyes can take on a glassy appearance, and this is often the result of too much time spent looking at a computer screen, but it can also result from eye surgery.
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Allergies: Allergic reactions can affect the sinuses and eyes. Often the eyes become irritated and itchy, causing them to appear red and glassy. Common allergens that affect eyes include dust, pollen, and pet dander.
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Intoxication: Glassy eyes can be caused by intoxication with various substances, including prescription medication and illegal substances. This is because these substances often affect the central nervous system, slowing the body’s ability to regulate functions that seem automatic to us like blinking. If a person takes longer to blink, their eyes become dry and glassy.
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Dehydration: Dehydration is a common cause of glassy eyes, especially in children, because of decreased tear production. Severe dehydration can lead to serious health consequences, including seizures, heatstroke, shock, and disorientation.
The treatment for glazed or glassy eyes depends on the underlying cause. After identifying and treating the cause, a person can take steps to prevent this symptom from recurring. For example, eye drops can replace a lack of tears and are available to purchase over-the-counter or online for dry eyes. Removing the allergen can decrease allergy symptoms, and over-the-counter medications and eye drops can also be used to treat allergies. For dehydration, drinking plenty of fluids can help alleviate symptoms.
