Sudden blurring of vision is usually not liver cancer. However, it cannot be ruled out that blurred vision may occur in the late stage of liver cancer due to brain metastasis. Sudden blurring of vision is generally considered to be caused by various eye diseases or blood system diseases associated with eye tissues, such as retinal detachment, glaucoma, transient ischemic attack, postural hypotension, etc. Liver cancer is a tumor disease caused by malignant disease of liver tissues. And liver cancer is a kind of tumor disease caused by malignant lesions in liver tissues, which represents the presence of malignant tumor foci in the patient’s liver, which will directly damage the functional health of the liver, and the disease usually does not cause the symptom of sudden blurring of vision. However, if brain metastasis occurs in liver cancer patients, it may cause blurring of vision, and at the same time, it will bring dizziness, headache and other discomforts. Individuals with symptoms of sudden blurred vision are recommended to go to the ophthalmology department of specialized hospitals for consultation, and then consider the possibility of liver cancer or other diseases after ruling out eye diseases.