What causes frequent eye redness?

Under normal circumstances, frequent eye redness may be caused by factors such as eye strain, long-term use of eye drops, scleritis, conjunctivitis, or glaucoma. When the above conditions occur, timely medical evaluation and treatment are recommended. Specific analysis is as follows:

1. Eye strain: Excessive use of the eyes reduces the frequency of blinking, accelerating tear evaporation and resulting in insufficient lubrication on the eye surface, which can lead to redness. It is advisable to reduce screen time and take breaks by gazing into the distance or closing the eyes periodically.

2. Long-term use of eye drops: Certain ingredients in eye drops may irritate ocular tissues, and prolonged use may cause eye redness. Eye drops should be used only as directed by a physician to avoid drug abuse.

3. Scleritis: Inflammation of the sclera due to scleritis can cause blood vessels around the eyeball to dilate, leading to eye redness. As prescribed by a doctor, medications such as methylprednisolone tablets, fluconazole eye drops, or tobramycin eye drops may be used, particularly when infection or allergy is involved.

4. Conjunctivitis: Conjunctivitis is commonly caused by bacterial or viral infections, or allergies. It typically results in dilation of blood vessels around the eyes, causing redness. According to medical advice, medications such as ofloxacin eye drops, chloramphenicol eye drops, or ganciclovir eye drops may be used to alleviate inflammation.

5. Glaucoma: A hallmark of glaucoma is elevated intraocular pressure. During an episode, increased pressure inside the eye may cause dilation of surrounding blood vessels, resulting in eye redness. Treatment may include medications such as mannitol injection, betaxolol hydrochloride eye drops, or carteolol hydrochloride eye drops, as recommended by a physician.

In daily life, consuming foods rich in vitamins—such as carrots, spinach, and eggs—can help maintain eye health.