The common microorganisms that cause infective keratitis are viruses, bacteria, fungi, and amoebas, with trauma being a common trigger. The common symptoms of infectious keratitis are eye pain, eye redness, photophobia, tearing, and vision loss. If the infection is caused by a very virulent bacterial or fungal infection, the disease will develop within a short period of time and progress rapidly. To prevent the occurrence of infectious keratitis, you need to develop good hygiene habits, wash your hands regularly, cut your nails often; do not use your hands or sleeves to rub your eyes; do not wear contact lenses for a long time, wash your hands before taking them off, pay attention to the hygiene of the lens case and care solution; people engaged in front-line production should pay attention to occupational protection and wear protective glasses when working; prevention of viral keratitis should pay attention to avoiding colds, do not overwork and Once the above symptoms appear, you should go to the hospital in time.