Diabetic eye disease is one of the most common complications of diabetes. It can cause vision loss and eventually blindness and should not be ignored by patients. Which diabetic patients are prone to eye disease? 1. Patients with poor long-term control of high blood sugar and large fluctuations in blood sugar. 2.Patients with a long history of the disease. 3.Patients with insulin-dependent diabetes mellitus. 4.Patients with gestational diabetes. 5.Patients who have hypertension and hyperlipidemia at the same time. 6.Patients who smoke and take oral contraceptives at the same time. What eye diseases can be caused by diabetes mellitus? Diabetes can cause the following eye diseases: Retinopathy: Retinopathy is the most common diabetic eye disease. Retinal microangiomas, edema, hemorrhage, neovascularization, and retinal detachment caused by diabetic microangiopathy lead to vision loss and eventual blindness. Cataracts: Cataracts in middle-aged and older diabetic patients are more cloudy and develop more rapidly. Cataracts in adolescent diabetics usually develop rapidly and can become completely cloudy within a few days. Neovascular glaucoma: Diabetic microangiopathy causes neovascularization. When a neovascular membrane forms on the iris surface and atrial angle, it causes the atrial angle to close, the intraocular pressure to rise, and severe eye pain and headache to occur. The optic nerve gradually atrophies, and the visual field then shrinks and disappears, eventually leading to blindness. Dry eye: In diabetic patients, reduced tear production, decreased corneal perception and delayed corneal epithelial healing lead to dry eye. Refractive error: For diabetic patients with large fluctuations in blood glucose, when blood glucose rises sharply, the patient may suddenly change from ortho-opia to myopia, or the original presbyopia symptoms may be reduced; when blood glucose decreases sharply, the patient may return to ortho-opia, or may need to wear presbyopic glasses again. Neuropathy: Diabetes can cause eyelid and eye motor nerve palsy and ischemic optic neuropathy, resulting in ptosis, limited eye movement, diplopia, vertigo, vision loss, and visual field defects, which once they occur, usually take months to recover. Many patients with diabetes have a history of the disease for many years prior to diagnosis, and some are only found to have diabetes when they develop eye disease. Regular eye examinations, timely detection of eye complications, early diagnosis and effective treatment can maximize the preservation of visual function.