There are several possibilities: 1. keratitis, keratitis can be manifested as photophobia, tearing and blurred vision, you can order levofloxacin eye drops 3-5 times a day, ganciclovir eye drops 4 times a day, and apply levofloxacin eye gel at night before going to bed. 2. corneal dryness, severe corneal dryness can appear as corneal clouding, sometimes the corneal epithelium is spontaneously shed, thus The eye is not only a good way to get a good view, but also a good way to get a good view. 3, refractive error caused by visual fatigue, if there is refractive error and do not wear appropriate glasses, there will be tears, blurred vision and other symptoms. 4, lacrimal tract disease, there will be tear overflow symptoms when there is a tear duct obstruction, sometimes tears will blur vision, causing blurred vision, need to treat the tear duct disease.