Whether or not a cold can cause keratitis needs to be judged on a case-by-case basis. It is recommended to pay more attention to rest and eat lightly during the cold, and if the cold is serious, you need to cooperate with your doctor to use medication to treat it. 1, will not cause keratitis: If you only have a mild cold, and your body does not show obvious symptoms of discomfort, you usually pay more attention to eye cleanliness and hygiene, and do not draw eye makeup. It usually does not lead to the growth of eye bacteria, so it will not cause keratitis; 2, may cause keratitis: If the cold is more serious, during the cold may lead to a decrease in body immunity. If you often wear eye makeup and do not do a good job of eye hygiene and cleaning, it may lead to the growth of eye bacteria, which may cause keratitis at this time, leading to eye redness, swelling, pain, and possibly increased eye discharge. If you have a cold, you can properly drink more warm water, which can promote the body’s metabolism and also help to reduce the symptoms of the cold. In addition, you can also cooperate with your doctor to use cold medications for treatment, such as Aminoglutethimide Naimin capsules, Banlangen granules, etc. Daily also need to pay special attention to eye cleanliness and hygiene, if it causes keratitis, usually can use levofloxacin hydrochloride eye drops treatment, generally can play anti-inflammatory and antibacterial effect.