Why does my vision go black at random intervals and I lose balance while this happens, happens for a few seconds? - Quora
![Sometimes, when I'm looking at something, my eyesight goes completely black for a split second and then everything goes back to normal as if I was just blinking, however, I know that Sometimes, when I'm looking at something, my eyesight goes completely black for a split second and then everything goes back to normal as if I was just blinking, however, I know that](https://qph.cf2.quoracdn.net/main-thumb-611683567-200-rvmtcbokyjngvojwhujtdvjidmzchwwh.jpeg)
Sometimes, when I'm looking at something, my eyesight goes completely black for a split second and then everything goes back to normal as if I was just blinking, however, I know that
When covering one eye and staring out the other, a big black circle appears over my vision. It goes away when I blink or move my eyes. What is this? - Quora
![Why does my vision gradually go black with sudden dizziness for a few seconds when I suddenly stand up? Is it normal? - Quora Why does my vision gradually go black with sudden dizziness for a few seconds when I suddenly stand up? Is it normal? - Quora](https://qph.cf2.quoracdn.net/main-thumb-761440227-200-oovfmrpeiojtrkwcdjjayghdzpxmxctn.jpeg)
Why does my vision gradually go black with sudden dizziness for a few seconds when I suddenly stand up? Is it normal? - Quora
Why does my vision gradually go black with sudden dizziness for a few seconds when I suddenly stand up? Is it normal? - Quora
![Occasionally my vision goes black for a second and then returns to normal. It looks like someone flicked the light switch off and on very quickly, but isn't actually caused by flickering Occasionally my vision goes black for a second and then returns to normal. It looks like someone flicked the light switch off and on very quickly, but isn't actually caused by flickering](https://qph.cf2.quoracdn.net/main-thumb-1955839732-200-fbmegvvdpdydheqalxsjhvljppzfppyf.jpeg)
Occasionally my vision goes black for a second and then returns to normal. It looks like someone flicked the light switch off and on very quickly, but isn't actually caused by flickering
![Occasionally my vision goes black for a second and then returns to normal. It looks like someone flicked the light switch off and on very quickly, but isn't actually caused by flickering Occasionally my vision goes black for a second and then returns to normal. It looks like someone flicked the light switch off and on very quickly, but isn't actually caused by flickering](https://qph.cf2.quoracdn.net/main-thumb-331199323-200-drckkoszbhskjdcupcyiyyomjeaclpyi.jpeg)
Occasionally my vision goes black for a second and then returns to normal. It looks like someone flicked the light switch off and on very quickly, but isn't actually caused by flickering
![Occasionally my vision goes black for a second and then returns to normal. It looks like someone flicked the light switch off and on very quickly, but isn't actually caused by flickering Occasionally my vision goes black for a second and then returns to normal. It looks like someone flicked the light switch off and on very quickly, but isn't actually caused by flickering](https://qph.cf2.quoracdn.net/main-thumb-1856582589-200-kcmveevmtgjbwbksnnygkajoxlouhcay.jpeg)