The causes of vision impairment include refractive errors, fundus diseases, cataracts, etc. Depending on the causes, you need to enhance your vision through life adjustments, wearing glasses, surgical treatments, physical treatments and other methods. 1. Refractive error: If the refractive error is caused by astigmatism, hyperopia or myopia, it will affect the normal vision, so you need to go to the hospital to do the vision test, and wear appropriate glasses to improve the refractive error. 2. Fundus diseases: If the patient has retinopathy, macular edema and other conditions, it may lead to poor vision. For patients with retinopathy, retinal photocoagulation, laser photocoagulation and freezing can be used to close the retinal tear. If there is macular degeneration, it can be relieved by laser photocoagulation. 3. Cataract: It may be related to the age factor, which will lead to clouding of the lens of the eye, causing vision loss, and requires oral vitamin C, vitamin E and other medications, together with the use of pinoxin eye drops, glutathione eye drops and other medications as prescribed by the doctor. If there are indications for surgery, cataract surgery should be performed in a timely manner. It is recommended that patients with poor vision should consult a doctor in a timely manner to clarify the cause of poor vision and strictly follow the doctor’s instructions for treatment.