Red eyes may be due to bad eye habits, foreign body irritation, eye infections, etc. Treatment includes correcting eye habits, wearing glasses, medication and so on. 1. Bad eye habits: prolonged use of electronic products, such as long-term late night, can lead to dry eyes, conjunctival congestion. You need to cultivate good eye habits, reduce eye time, relax your eyes in time, and also use nafamivir eye drops to relieve visual fatigue. 2. Foreign body irritation: if the eyes into the eyelashes, dust, etc., there can be red eyes, accompanied by itching and other manifestations, you need to remove the foreign body, rest for a period of time can be relieved. 3. Eye infections: often caused by bacterial or viral infections, such as conjunctivitis, keratitis, etc., redness and swelling of the eyes can occur, the treatment is usually used antibiotic or antiviral eye drops, such as levofloxacin eye drops, acyclovir eye drops, etc.. 4. Eye allergy: allergic conjunctivitis and other allergic diseases, can also lead to conjunctival congestion, manifested as red eyes, usually need to take anti-allergy drugs under the guidance of a physician, such as loratadine and other treatment. 5. Vision problems: refractive error, presbyopia and other conditions without timely prescription, easy to visual fatigue, resulting in eye redness, the need for timely access to hospital optometry. The symptoms of redness in the eyes, need to identify the cause of the disease, under the guidance of the physician to take scientific treatment to eliminate the cause of the disease, relieve the symptoms.