Red blood in the eyes may be bacterial conjunctivitis, scleritis, dry eye and so on. If it is caused by conjunctivitis, you can try to use levofloxacin eye drops to treat it. Conjunctivitis is contagious, you must do a good job of eye hygiene and self-isolation. Scleritis is mostly related to the autoimmune system, and can be treated with topical application of hormonal eye drops such as flomilon drops and non-steroidal eye drops such as pranoprofen drops. Most of the dry eye syndrome is caused by improper use of the eyes, it is recommended that you can use the eyes scientifically, reasonable rest, medication can be used sodium vitrate eye drops and so on. Red eyes with blood will affect the daily use of eyes, affecting the life, the need to consult a doctor in a timely manner, a clear cause, follow the doctor’s instructions to deal with the drugs should be used under the guidance of a doctor, do not self-medication.