Dry and itchy eyes of junior high school students may be caused by visual fatigue, keratitis, dry eyes and other reasons. 1. Visual fatigue: due to the junior high school students long-term reading distance is too close or staring at a position for a long time, the eyes do not get timely rest, easy to cause dry and itchy eyes and other symptoms. 2. Keratitis: may be junior high school students in the process of eye use, rubbing the eyes or other causes of conjunctival infection, conjunctival congestion, edema, etc., will also appear dry and itchy eyes. 3. Dry eye: it may be systemic nutritional disorders, such as vitamin A deficiency, long-term use of contact lenses and other reasons, the conjunctival epithelial cell layer and subconjunctival tissues are destroyed, conjunctival dryness occurs, causing dry and itchy eyes. When eye discomfort occurs, if the symptoms cannot be relieved after resting, it is recommended to consult a doctor in time, follow the doctor’s instructions for further examination, to clarify the cause, and carry out targeted treatment or therapy.