High-incidence chronic diseases such as diabetes and hypertension often involve blood vessels under the eyes. If not controlled, retinal vascular disease will occur, and in severe cases, it will lead to Blindness.
Dry eye is caused by many reasons such as environment, systemic diseases, eye localization, lifestyle, etc., among which systemic Lupus erythematosus, Sjogren's syndrome, graft-versus-host disease and other systemic immune diseases can cause dry eye.