Red blood clots in the eyes without other obvious signs and symptoms can be treated with cold compresses, and if they do not subside for a long time, they should be treated with medications such as levofloxacin and captopril to address the cause of the problem. Red blood clots visible in the eyes are mainly caused by the rupture of small blood vessels in the conjunctiva, excessive drinking, rubbing, infectious conjunctivitis and hypertension, vascular sclerosis, coagulation disorders, etc., can be treated with cold compresses or wait for its self-absorption if there is no combination of infections and systemic diseases. For the disease basis of the subconjunctival bleeding obvious clots, need to promptly consult a doctor to improve the blood routine, slit lamp microscopy and other auxiliary examination, to exclude hematopoietic coagulation and other aspects of the obstacles to infection, hypertension and other etiological causes to be levofloxacin eye or captopril and other antihypertensive drug therapy. Drugs should be used in accordance with the doctor’s instructions, do not blindly use drugs. Red blood clots in the eyes, recurring or accompanied by other physical discomfort, it is recommended to consult a doctor in a timely manner, improve the slit lamp microscopy and other auxiliary examination to be targeted treatment.