Red bloodshot eyes can be caused by bad habits, should be corrected to stay up late, dirty hand rubbing eyes and other habits; if caused by keratitis, you can use the appropriate drug treatment. 1. If you often stay up late at night, like to rub your eyes with your hands, etc., the phenomenon of bloodshot eyes can occur, usually should be regular work and rest, do not rub your eyes with your hands. Generally, it can be recovered by itself, and cold compresses can help to relieve it. 2. Conjunctivitis can be characterized by red, itchy, photophobic and tearful eyes. If bacterial infection, you can use levofloxacin eye drops, tobramycin eye drops, etc.; if fungal infection, you can use amphotericin B eye drops, miconazole eye drops, etc.; if viral infection, you can use ganciclovir, acyclovir eye drops, etc.. In addition, dry eye disease eyeballs will also have red blood, through rest, the use of artificial tears can be relieved. If the redness of the eyeballs is serious and cannot be relieved, you should go to the hospital in time, and the use of medication should be in accordance with the doctor’s instructions.