The causes of eye redness are physiological and pathologic, pathologic including glaucoma, allergies, etc., can be relieved through general treatment and medication. 1. Physiological: Redness will appear when using electronic products for a long time, irregular work and rest, excessive fatigue, and staying up late for a long time. It is recommended to reduce the time of using electronic products, regular work and rest, avoid staying up late, and do eye exercises diligently to alleviate the symptoms. 2. Pathological: glaucoma caused by elevated intraocular pressure will appear after the blood vessels of the eye congestion, you can use drugs to reduce intraocular pressure, thus reducing discomfort. Allergies caused by eye redness can take Benadryl and other anti-allergy drugs to treat the relief, and at the same time to stay away from allergens. Due to individual differences and the diversity of causes, the drug is not absolutely safe and effective, need to follow the doctor’s instructions to standardize the use of adverse reactions need to consult a doctor in a timely manner, drug allergy is prohibited.