Redness in the eyes can be caused by a variety of factors, including inflammation or dilation of blood vessels. Some of the possible causes of red eyes are:
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Irritants: Redness can be a reaction to something irritating your eye, such as allergies or an eye injury.
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Dryness: Dry eye is caused by a host of prescription and nonprescription drugs, including anticholinergics, antihistamines, diuretics, hormones, nasal sprays, and antidepressants. There is also a positive correlation between people with sleep deprivation and dry eyes.
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Infections: Conjunctivitis, also known as pink eye, is an inflammation of the conjunctiva that can be caused by bacteria, viruses, or allergens. Symptoms include red, burning, sore, or gritty eyes with puffy eyelids, and there may be yellow discharge coming from the eyes.
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Makeup and skincare products: Some ingredients in makeup and skincare products can cause eye irritation and redness, such as abrasive scrubs, products containing alcohol, medicated creams containing steroids, and makeup products containing heavy metals like nickel or chrome.
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Other medical conditions: Red eyes can be a symptom of other medical conditions, such as acute glaucoma, uveitis, or blepharitis.
Its important to note that many cases of eye redness are relatively harmless and usually improve with home remedies or over-the-counter treatments. However, if your eye or eyes remain red for longer than one week, or if you have pain or vision problems, make an appointment with an eye care provider, perhaps with an ophthalmologist (eye doctor) or an optometrist.
