Suddenly, I can't see what's going on.

A sudden loss of vision, if transient blackening or blurring of vision occurs, and vision recovers after a short rest, it is often considered to be an invisible phenomenon caused by insufficient retinal blood supply caused by transient ischemia. This situation often occurs in orthostatic hypotension caused by sudden rising, or insufficient blood supply to the eyes caused by plaque in the neck artery. Normal need to go to the hospital to check neck blood flow ultrasound or cerebral blood flow ultrasound, rule out neck blood vessels and cerebral blood vessel obstruction phenomenon. If there is no problem in this area, let alone tension, general observation can, will not produce excessive influence. If persistent unclear, suddenly show persistent unclear, consider arterial blood vessel obstruction or optic nerve damage caused by vision decline. It is necessary to go to the hospital to check the fundus to observe the condition of the optic nerve and retina, and take corresponding treatment according to the corresponding signs.