Vision deterioration in astronauts who spend a long time in space is likely due to the lack of a day-night cycle in intracranial pressure. But using a vacuum device to lower pressure for part of each day might prevent the problem, researchers said.
Idiopathic intracranial hypertension | Radiology Reference Article | Radiopaedia.org - Idiopathic intracranial hypertension (IIH), also historically known as pseudotumour cerebri, is a syndrome with signs and symptoms of increased intracranial pressure but where a causative mass or hydrocephalus is not identified.
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