Suddenly you can’t see anything in one eye for a while, which is often related to spinal disease, brain disease, eye disease, and can be diagnosed and analyzed by doing imaging test, fundus screening test, brain imaging test, etc. 1. Spinal diseases: These diseases include neurogenic cervical spondylosis, vertebral cervical spondylosis, sympathetic cervical spondylosis, spondylitis, etc. These diseases will compress the surrounding nerves, including the optic nerve, thus affecting vision and accompanied by dizziness, headache and other symptoms. The disease can be diagnosed and analyzed by X-ray, CT and MRI. 2. Brain diseases: for example, cerebral infarction, ischemic encephalopathy, cerebral hemorrhage, etc. These diseases can also affect vision when they are serious and cause blurred vision and transient vision loss. The cause can be analyzed through brain CT and cranial magnetic resonance examination. 3. Eye diseases: for example, conjunctivitis, keratitis, myopia, etc. may cause transient vision loss. Diagnosis can be made by doing fundus pressure and refraction test. If you can’t see anything in one eye all of a sudden, and accompanied by other adverse reactions, you need to consult a doctor in time. The doctor will make a preliminary diagnosis and analysis according to each person’s situation, and then combine with the relevant examination to determine the cause.