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The problem is not in the eyes but in the brain. Standing up suddenly can cause low blood pressure in the brain which can cause parts of it to selectively shut-down momentarily. To avoid this problem get yourself a little excited before standing up: hyperventilate (slightly), pump your muscles, stretch your legs, think of what George Bush did to the economy.

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12y ago
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14y ago

Low Blood Pressure. It's okay but, if it happens to often you may want to go see a Doctor. :D

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11y ago

It's the blood that had been pooling in your lower half of your body rushing to your head .

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12y ago

Without knowing more about you, I would say it is a blood pressure issue. That is what you should start getting checked out.

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Q: You stand up and everything goes black?
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