Particularly dry eyes may be caused by wearing corneal contact lenses, or due to dry eye, trachoma and other diseases. 1. Wearing corneal contact lenses: If you wear corneal contact lenses for a long period of time, it will lead to corneal hypoxia, which makes the distribution of tears abnormal, and so the eyes will be particularly dry. 2. Dry eye: the occurrence of this disease is related to insufficient tear secretion, excessive tear evaporation, abnormal tear composition, etc. It can be induced by improper diet, air pollution, gender, age and other factors, resulting in eyestrain, dryness, foreign body sensation and other symptoms, so the patient will feel particularly dry eyes. 3. Trachoma: This disease is mainly caused by Chlamydia trachomatis infection, which can be directly or indirectly contacted through mother-infant contact or eye-hand-eye contact. Common symptoms include itching, dryness, burning sensation, photophobia, etc., which may be manifested as particularly dry eyes. In addition, it may also be caused by diseases such as dry syndrome, scleroderma, and systemic lupus erythematosus. It is recommended that patients with unusually dry eyes visit a hospital to determine the exact cause.