There are many causes of blurry eyes. So if you want to solve the problem, you must first identify the cause. Most patients with blurry eyes may be caused by refractive error, such as myopia, hyperopia or astigmatism, so a routine examination at the hospital ophthalmology department, if it is found that the visual acuity does not reach 1.0, usually requires medical optometry, after which it can be clarified whether it is caused by refractive error, and if it is confirmed, consider wearing glasses to correct the symptoms of blurry eyes. There are many other causes of blurry eyes. For example, if an elderly person has a gradual loss of vision, it may be a cataract. If the symptoms are obvious and the vision drops below 0.5, cataract surgery with IOL implantation can be considered. The eyes are also accompanied by symptoms such as swelling and pain, headache, nausea, etc., it may be caused by glaucoma, and it is recommended to hurry to the hospital to lower the eye pressure to deal with it; If you suddenly find a significant loss of vision, a sense of water ripples, and a sense of lightning. If there is a sense of fixed obscuration, it may be caused by retinal detachment, blood accumulation in the vitreous cavity, etc., and may require surgery. Therefore, if blurred vision, etc., it is recommended to go to the hospital ophthalmology department for timely treatment.