If the cause is high blood pressure or a bleeding disorder, your eye-care provider may recommend you visit your family physician for treatment. Occasionally subconjunctival hemorrhages have been linked to high blood pressure or a bleeding disorder.īecause the hemorrhage is not dangerous, no treatment is needed and symptoms usually disappear within a week or two. The cause of a subconjunctival hemorrhage is not always known, but some cases have been linked to coughing, straining, or using blood thinners. Subconjunctival hemorrhages occur when one of the tiny blood vessels under the conjunctiva bleeds. If you are experiencing other symptoms, such as discharge or pain associated with the redness, you should schedule an appointment with your eye-care professional or primary care doctor right away to see if one of these conditions is present.Ī bright red patch on the sclera (the white part of the eye) is the sign of a subconjunctival hemorrhage. Other times red eyes can be a red flag, indicating a more serious problem such as blepharitis, conjunctivitis, corneal ulcers, scleritis, or acute glaucoma. If a contact lens wearer does not keep their lenses clean and disinfected, or wears them for too long, they can experience red eyes.Įxcessive dryness can also cause eyes to become red and irritated. People who do not get enough sleep will also experience red eyes.Įye infections and inflammations can cause red eyes, as well as other symptoms such as itching, discharge, pain, and blurred vision. One of the most common causes of red eyes are allergens and environmental irritants such as pet dander, pollen, dust, wind, dry air, and sun. This can sometimes be a medical emergency. Red eyes happen when the blood vessels on the surface of the eye (the conjunctiva) become irritated, which causes them to become enlarged and dilated. Red eyes are also referred to as bloodshot eyes, pink eye, and allergy eyes. It is a very common condition that is usually caused by something else such as fatigue, substance abuse, allergies, or cold/flu. Red eye could be due to an illness, injury, eye infections, or other condition such as allergies.ĭoctors do not tend to take immediate action when a patient comes in with red eyes. “Red eye” is a non-specific term that describes the appearance of the eye.
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