The blurred eyes of patients in their fifties should be treated according to different causes, and the symptom may be caused by over-exertion of the eyes, glaucoma, cataracts and other reasons. 1. Excessive eye use: If patients in their fifties look at cell phones and computers for a long time, it may cause excessive eye use, which may result in blurred eyes. It can be relieved by improving the habit of using eyes, such as reducing the time of looking at the cell phone and avoiding over-exertion of the eyes. 2. Glaucoma: Glaucoma is caused by abnormally high intraocular pressure (IOP), which may cause blurring of the eyes in patients in their fifties due to the gradual compression of the optic nerve by long-term high IOP. It can be treated by the use of drugs to lower intraocular pressure, such as carteolol hydrochloride eye drops, latanoprost eye drops and so on, and the drugs should be used according to the doctor’s instructions. 3. Cataracts: Cataracts are visual disorders caused by clouding of the lens, and patients in their fifties who suffer from cataracts may also experience blurred eyes. Cataracts can be treated by cataract ultrasonography, extracapsular cataract extraction and other surgeries. If patients in their fifties have blurred eyes, they need to go to a regular eye hospital to do a detailed examination, identify the cause of the disease, and then choose the appropriate treatment plan under the guidance of the doctor, such as the use of medication should follow the doctor’s instructions, not to use medication on their own.