Fundus screening is necessary. Fundus screening is a kind of examination to check for diseases of the retina and optic nerve of the eye. Through fundus screening, lesions of the fundus can be detected in time and eye diseases can be prevented, especially for people who have a family history of glaucoma and diabetes, it is more necessary to have fundus screening. People with narrow-angle glaucoma need to visit the eye clinic promptly if they have a sore nose, swollen eyes, sudden headache, swollen and painful eyes. People with open-angle glaucoma do not have symptoms, but if they do not undergo fundus screening, they will slowly feel the narrowing of vision and loss of vision, which is already at an advanced stage and the damage is irreversible. When diabetic people have fundus hemorrhage, oozing and black shadows in front of their eyes, fundus disease has already occurred, which belongs to the more serious period, and at this time, surgical treatment can not reach the normal level of visual acuity, so we should pay extra attention to it. People with fundus disease should follow the doctor’s advice and treat it correctly.