Blurred vision in one eye and clear vision in the other eye is usually considered to be related to monocular cataract, refractive error, amblyopia and other diseases. According to the actual condition of the patient, surgery and other means of treatment will be taken under the guidance of the doctor. 1. Monocular cataract: Cataract may be caused by age, injury, excessive alcohol consumption, excessive sunlight exposure and other factors, usually with symptoms such as vision loss, blurred vision, etc., and can be treated by cataract ultrasonic emulsification and other surgical methods under the guidance of a doctor. 2. Refractive error: If one eye has myopia or astigmatism, the vision will also be blurred, which needs to be corrected by optometry. 3. Amblyopia: This may be due to the fact that the retina of the eye has not developed properly, causing one eye to be blurred and the other to be clear. Amblyopia may be caused by refractive error, strabismus and other factors, usually appear vision loss, visual fatigue and other symptoms, can follow the doctor’s instructions for surgery or amblyopia training, optometry and other treatments. If one eye is blurred and the other is clear, you should pay attention to rest, avoid excessive eye use, participate in outdoor activities, and go to the regular hospital in time to avoid delaying your condition.