There are many types of keratitis, including bacterial keratitis, fungal keratitis, viral keratitis, etc. 1, bacterial keratitis, caused by bacterial infection, usually has an acute onset, often with a history of corneal trauma or wearing contact lenses. You can order levofloxacin eye drops, apply levofloxacin eye gel before going to bed at night, and if you are not allergic to cephalosporins, you can take oral cephalosporin antimicrobials. 2, fungal keratitis, fungal keratitis mostly has a history of plant injury, and can be treated with topical antifungal drugs, such as natamycin eye drops or fluconazole eye drops, or a combination of drugs. 3, viral keratitis, viral keratitis is often caused by The actual herpes simplex virus is often caused, you can order ganciclovir eye drops, apply ganciclovir eye gel at night before going to bed, and in severe cases you need to take oral acyclovir.