As we all know, the incidence of diabetes is not only increasing day by day in China, but also getting younger and younger. As a result, the incidence of eye diseases caused by diabetes has also increased a lot. First of all, why does diabetes cause eye disease? Diabetes is a condition in which the level of glucose in the blood is consistently higher than normal, which over time can damage the walls of blood vessels and cause complications. The eye is an organ with abundant blood circulation, and in diabetic patients, the blood vessels in the eye are broken, so diabetic eye disease can develop. What eye diseases can be caused by diabetes? The various layers of tissues in the eye need to maintain blood supply for physiological functions, so it can be said that diabetic lesions can occur in the eye from the surface to the inside. 1, Damage to the cornea and conjunctiva, the incidence of dry eye in diabetic patients is higher than in the normal population. 2. The most vascularized tissue in the wall of the eye is the uvea, and the blood volume accounts for 70% of the whole eye; therefore, diabetic patients are prone to iritis, ciliary limbitis, and chorioretinitis. 3. After the nutrient metabolism of the lens is affected, cataract develops early and fast. A sudden increase in blood sugar may also cause crystalline myopia. 4. The destruction of the blood vessels of the retina leads to diabetic retinopathy, a serious problem that can cause blindness. 5.Diabetic optic neuropathy, although the incidence is not high, but the impact on vision is serious. 6. As the cerebral blood vessels are affected, small thrombotic and hemorrhagic lesions appear, leading to sudden paralytic strabismus and ptosis in the eyes. In short, diabetes is not well controlled, will produce a variety of eye diseases, some can also lead to blindness, so, once the corresponding symptoms of diabetic patients, please promptly go to the ophthalmology consultation.