Herpes simplex virus keratitis is a corneal infection caused by herpes simplex virus, and is one of the most dangerous infectious eye diseases in the world today, and is the main cause of corneal blindness. The incidence of keratoconus is the highest, and there are about 500,000 cases of herpes simplex infection in the United States each year. Although there is no epidemiological data on a large sample in China, there should be millions of people affected each year according to the population. The clinical characteristics of herpes simplex virus keratitis are multi-type and recurrent. Herpes simplex virus (HSV) is widely present in nature, and humans are natural hosts for HSV, so human contact with HSV can occur early in life, and primary infection usually occurs between 6 months and 5 years of age. symptoms of infection. Thus, the vast majority of primary herpesvirus infections are subclinical, and more than 95% of the patients we see in the clinic have recurrent infections following an asymptomatic primary infection. Ocular HSV infection can lead to blepharitis, tear duct obstruction, conjunctivitis, keratitis, uveitis, and retinitis. There are more clinical types of herpes simplex virus keratitis, and the presenting treatment with medications is still effective, except that the problem of recurrence is not well resolved at this time. Therefore, if you have herpes simplex virus keratitis, you must not be discouraged, but you should not take it lightly, because it is, after all, a blinding eye disease. Patients are reminded that they must receive regular treatment under the guidance of a keratoconus specialist to avoid serious damage to their vision. The following are before and after pictures of some of our patients. We can see that medication is effective in reducing the symptoms and regressing the epithelial lesions, and in some patients with multiple relapses of severe keratoconus, medication can restore vision through corneal transplantation after one year of stabilization. 14-year-old male with monoherpetic viral keratitis. Top is before treatment, bottom is after 7 days of treatment. Visual acuity improved from 0.6 to 1.0 15-year-old female with herpes simplex virus keratitis. The top is before treatment and the bottom is after 21 days of treatment. Visual acuity improved from 0.05 to 0.4 46 years old, male, herpes simplex virus keratitis. The top is before treatment, the bottom is after 21 days of treatment. Significant reduction in symptoms. 38-year-old female with herpes simplex virus keratitis. Top is before treatment, bottom is after 7 days of treatment. The symptoms were significantly reduced and the visual acuity improved from 0.6 to 1.2.