Blurred eyes are relatively common after the age of 50, and most patients have a relationship with phthisis or cataracts. The cause of the blurring needs to be examined before it can be treated. For example, if the blurring is caused by presbyopia, it can be treated by wearing close-up glasses; if it is caused by cataract, it can be treated by surgery. Blurred vision caused by presbyopia is mainly caused by unclear vision, which can be corrected by wearing glasses for near vision, i.e. presbyopia. Cataracts, on the other hand, cause vision loss, which makes it difficult to see clearly both near and far. Surgery is usually needed to restore vision by replacing the cloudy lens inside the eye with a clear artificial crystal. It is recommended to go to the ophthalmology department of the hospital for examination to confirm the diagnosis and treatment.