Redness, swelling and itching around the patient’s eyes may be caused by overuse of eyes, allergic reaction, keratitis, conjunctivitis and so on. 1. Excessive eye use: If patients watch TV, play cell phones, play computer for a long time, it will easily lead to excessive eye use, causing visual fatigue, patients may appear red, swollen, itchy, soreness and other discomfort around the eyes. 2. Allergic reaction: If allergic patients with expired or irritating cosmetics or mosquito bites, light stimulation, it may lead to allergic reactions of the skin around the eyes, which may cause redness, swelling, itching and other uncomfortable symptoms around the eyes. 3. Keratitis: Keratitis is an inflammation of the cornea caused by the environment, infection, autoimmune deficiency, etc. Under the stimulation of inflammation, patients may experience discomfort such as redness, swelling and itching around the eyes. 4. Conjunctivitis: Conjunctivitis is an inflammation of the conjunctiva caused by infection, autoimmunity, etc. Under the influence of inflammation, the patient’s eyes may be red, swollen, itchy and other uncomfortable symptoms. It is recommended that patients with obvious redness, swelling and itching around the eyes should consult a hospital in time to assess their condition and under the guidance of a doctor for standardized treatment.