Eye drops can be used for eye blurring caused by insufficient blood supply to the brain, but if the symptoms are not relieved significantly or cannot be relieved, the root cause of the symptoms should be treated, i.e. treating insufficient blood supply to the brain. The most common clinical cause of insufficient blood supply to the brain is the narrowing of blood vessels caused by atherosclerosis, which reduces the blood flow to the eye vessels and causes blurred vision, which can be treated with medications to regulate lipids, anti-platelet aggregation, and improve microcirculation, such as statins, aspirin, and ginkgo biloba, etc. The use of eyedrops can not alleviate the blurred vision caused by insufficient blood supply to the brain. It is recommended that patients go to the hospital for further examination, such as blood routine, blood lipids, blood glucose, blood pressure, cervical vascular ultrasound, fundus examination, etc., to clarify whether it is caused by cerebral blood supply insufficiency, because other diseases of the eye can also appear symptoms of blurred vision. Patients should use medication under the guidance of a physician and avoid self-medication.