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The most important causes of eye redness
Red eyes are a very common symptom. They can be mild and temporary, or they can be a sign of a problem that needs treatment. Redness is usually caused by dilation of the small blood vessels in the eye. The most common causes of red eyes are: Fatigue and eye strain Late sleep or prolonged screen time. Dry eyes A lack of tears makes the eyes irritated and red. Allergies Such as allergies to dust, smoke, perfumes, and pollen. Conjunctivitis (pink eye) A viral or bacterial infection that causes visible redness with tears or discharge. Blepharitis Causes redness with burning and itching. Contact lenses Misuse or prolonged wear. Exposure to irritants such as smoke, chlorine in swimming pools, or dry air. Subconjunctival hemorrhage Appears as a red spot in the eye, often after a strong sneeze or heavy lifting. It is usually harmless and goes away on its own. High eye pressure or glaucoma May cause severe redness, accompanied by pain and blurred vision, requiring urgent intervention. Injury or foreign body entry such as a speck of dust or sand. When should you see a doctor immediately? If the redness is accompanied by severe pain. If there is blurred or lost vision. If it is accompanied by extreme sensitivity to light. If the redness persists for more than two days without improvement.

















