If elderly people have blurred vision, first of all, they should actively search for the causes of blurred vision and carry out the corresponding treatment, the specific causes are as follows: 1. cataract, cataract is a very common eye disease in the elderly, which can lead to blurred vision and vision loss, when the cataract has developed to a certain extent, the best corrected visual acuity is less than 0.3, cataract removal plus IOL implantation surgery can be performed. 2. glaucoma, which can lead to vision loss, visual field shrinkage and pain, then it is necessary to give hypotensive and nutritive treatment. 3. It can lead to vision loss, visual field shrinkage, and eye distention and pain. 3, Fundus lesions, such as ischemic optic neuropathy and retinal artery blockage, should be treated with vasodilator and nerve-nourishing drugs. 3, Macular edema, for macular edema caused by retinal vein blockage, age-related macular degeneration, etc., anti-VEGF drugs should be injected into the vitreous cavity. VEGF drugs, such as razumab or Compazepine. Therefore, when elderly people have blurred vision, they should promptly visit the ophthalmology department of a regular medical institution for detailed examination to determine the cause of the blurred vision and treat it accordingly.