Red and painful rolling of the lower eyelid may be caused by keratitis, blepharitis or conjunctivitis. 1. Keratitis: mostly caused by infections, autoimmune diseases, etc., the patient may have symptoms such as red and painful rolling open of the lower eyelid, tearing and fear of light. 2. Blepharitis: commonly known as granuloma, is an acute suppurative inflammation of the eyelid glands, mostly caused by staphylococcal infections, the affected area will appear red, swollen, hot, pain and other manifestations, which can be manifested in the lower eyelids open red and painful. 3. Conjunctivitis: an inflammatory disease of the conjunctival tissues, may be caused by contact infection, patients may appear lower eyelids open red and painful, itchy and increased secretion and other symptoms. If the patient has the situation that the lower eyelid turns red and painful, he should go to the regular hospital for diagnosis and treatment in a timely manner. Usually pay attention to eye hygiene and cleanliness, less late at night, try to avoid radiation.