Blurred vision in the eyes of a fifty year old is treated symptomatically depending on the cause. Causes are excessive eye use, eye vision, refractive interstitial turbidity and ocular lesions. 1. Excessive eye use: excessive eye use, eye fatigue will appear blurred vision Hu, to develop good eye habits, eye time should not be too long, eat more food containing vitamin A and vitamin B1. 2. Eye vision: astigmatism, nearsightedness and farsightedness can cause blurred vision, need to go to the hospital for examination, optometry. 3. Refractive interstitial clouding: lens clouding and degeneration, senile cataract, nutritional and metabolic disorders can cause blurred vision. There is no special drug can be treated, serious patients can choose surgical treatment. 4. Eye lesions: optic nerve and retinal lesions can also cause blurred vision. It is necessary to go to the hospital for relevant examinations to determine the cause of the disease and treat the symptoms. Patients with blurred vision should go to the hospital in time to do relevant examinations to determine the cause of the disease and seek appropriate treatment options.