There are many causes of fundus bleeding, often due to a number of diseases, so how should we prevent it? Let’s take a look below. Causes of fundus hemorrhage can be divided into two categories: systemic and local. First, systemic lesions 1, diabetic retinopathy: diabetic retinopathy is the most important manifestation of diabetic microangiopathy, is a kind of fundus lesion with specific changes, is one of the serious complications of diabetes mellitus, clinically, according to whether there is retinal neovascularization as a sign, the diabetic retinopathy without retinal neovascularization is called non-proliferative diabetic retinopathy The diabetic retinopathy with retinal neovascularization is called non-proliferative diabetic retinopathy, while the diabetic retinopathy with retinal neovascularization is called proliferative diabetic retinopathy. 2, hypertensive retinopathy: hypertensive retinopathy is a common cardiovascular system disease. The prevalence in the Chinese population is 11.88% (1991) about 70% of patients have fundus changes. The rate of positive fundus changes is not related to gender, but is more closely related to the patient’s age. The older the patient, the higher the rate of positive fundus in patients with hypertensive disease with a chronic course, the rate of positive fundus is proportional to the duration of the disease, and the rate of positive fundus is higher in patients with a longer duration of the disease. The degree of blood pressure increase is basically parallel to the rate of fundus positivity, and the increase of diastolic blood pressure has a more significant effect on fundus lesions and has a certain effect on fundus hemorrhage. 3, nephropathic retinopathy: nephropathic retinopathy is seen in patients with chronic or subacute diffuse glomerulonephritis combined with hypertension, and in acute nephritis there are generally no retinal changes. Because it is a systemic disease, the lesions are mostly seen in both eyes, and the fundus changes of the disease include retinal vasospasm, retinal hemorrhage and exudation, etc. However, the lesions are reversible and can be normalized by the healing of the disease. Local lesions 1. Retinal vasculitis: Retinal vasculitis is a large group of inflammatory diseases involving the retinal vessels. Typically manifested as a grayish-white vascular sheath exudate, hemorrhagic retinal edema and other changes is a serious threat to vision eye disease. It is caused by a variety of causes and can be associated with inflammation of other parts of the eye. Severe cases can lead to blindness. 2, retinal chorioretinitis lesions: the etiology of chorioretinitis is diverse and related to vasospasm, local blood circulation disorders, mental overexcitement or stress, excessive mental and physical labor, allergic reactions, infectious lesions and endocrine disorders. Clinical care is enhanced on the basis of evidence-based treatment to achieve very good results. The choroid and retina are close to each other, and when the choroid becomes inflamed, the retina is involved, so it is often diagnosed as chorioretinitis. Choroidal retinitis is a common fundus lesion, which is similar to the “vision dimming”, “green blindness”, “seeing straight as curved”, “vision confusion” and “vision correctness” recorded in Chinese medicine. It is similar to the “vision confusion” and “oblique vision” in Chinese medicine. Choroidal retinitis is characterized by blurred vision, dark central shadows, and discoloration and distortion of visual objects. Choroidal retinitis is characterized by blurred vision, dark central shadows, discoloration and distortion of visual objects, and the above is a description of the causes of fundus hemorrhage. If the amount of bleeding, vision is completely invisible, go to the hospital as soon as possible to let the doctor to deal with you, try to go to the regular eye hospital treatment, treatment of this disease requires good facilities and medical resources, so that the regular hospital to ensure the effectiveness of treatment, hope that patients recover as soon as possible.