High blood pressure is not monocular blurring, but patients with high blood pressure may cause symptoms of monocular blurring to occur. Patients with high blood pressure experience symptoms of blurred vision. The main reason is that high blood pressure may cause eye complications, of which arteriosclerosis of the fundus and retinopathy are relatively common complications caused by high blood pressure. High blood pressure can cause different degrees of atherosclerosis of the fundus, such as cross-pressure of arteries and veins, stenosis of the fundus arteries, and hemorrhage of the fundus. Retinopathy is also a common complication, which is caused by high blood pressure, resulting in generalized or limited stenosis and curvature of the retinal arteries in the fundus, increased exudation, which leads to optic papillae edema, and then blurring of one eye. These factors not only affect the patient’s vision, but in severe cases, loss of vision may even occur. For patients with high blood pressure who have fundus lesions or blurred vision, they should go to the hospital in time. Patients with high blood pressure are also advised to take regular medication and measure their blood pressure regularly to avoid complications.