Have you or your relatives and friends ever experienced such a situation: suddenly it was dark at the moment, even there was no sense of light at all, and then your eyesight slowly recovered after a while. This may be [paroxysmal blackness]. In addition to the black at the moment, it may also be accompanied by headache, dizziness or foggy eyes, dark spots, etc., most of which occur in unilateral eyes. What the hell is going on here? Is it a serious situation? Is what paroxysmal black mask? This situation indicates that there is a problem with the blood supply to the ocular artery. The blood vessel suddenly spasms, or some small emboli block the blood vessel, making the blood Read More …