The blurring and tearing of the eyes may be related to conjunctivitis, keratitis, or dry eye. If the patient often experiences transient blurring of vision or tearing after eye fatigue, the initial consideration is that dry eye is the cause. Try to minimize the time of close eye use or blink more after half an hour of eye use, close the eyes to rest or look into the distance, eye local point of artificial tears ophthalmic solution treatment. In addition, if the eyes appear blurred, at the same time there are tears, photophobia and other phenomena may also be caused by keratitis. In most cases, keratitis is caused by infection. If it is bacterial keratitis, use antibiotic eye drops and eye ointment; if it is viral keratitis, use antiviral eye drops and eye gel. If the eyes are congested and watery, with occasional blurring, acute conjunctivitis may also be present, which is caused by excessive secretions blocking the vision and needs to be treated with antibiotic eye drops and eye ointment.