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Nasa may use strange sleeping bags to prevent astronauts from losing sight in space

Nasa can use a strange sleeping bag to prevent astronaut tragically lost sight while on duty.

Journey in space hard to see in the eyes. Astronauts suffer from vision problems when fluid gets into their heads and clogs their eyeballs, pushing it in and reshaping it.

That could get even worse as astronauts make longer flights than humanity has ever done. “It would be a disaster if the astronauts were so functionally impaired that they couldn’t see what they were doing and it affects them,” said Benjamin Levine, who is working with Nasa to solve the problem. affect the mission.

It remains one of the biggest problems with space travel, and a great fear for humans, who might make further trips into space. Scientists have been grappling with it for more than a decade.

It caused problems for astronauts who visited the International Space Station. Of those who spent at least six months in a floating lab, more than half experienced eye problems – finding themselves far-sighted, having difficulty reading or even being forced to ask colleagues for help with experiments.

So far, the main response has been to provide astronauts with special glasses that can adjust their lenses to address any eye problems. But that didn’t reduce any long-term effects, either on the eyeballs or anything else – such as the potential cardiovascular problems found in previous research.

“And certainly there could be other effects of brain pressure that we haven’t seen yet,” Dr. Levine said. “Astronauts report on what they call ‘space towers.’

“They make more mistakes than they think. Whether that has something to do with not being able to depressurize, we don’t know.”

One solution could be a new sleeping bag, which puts pressure on the brain by pulling fluid into the lower body. Astronauts will sleep in their bags and hope to keep their eyes safe from such shape-shifting.

The new sleeping bag was tested in a study on Earth when a volunteer lay in bed for three days. At night, he will be placed in a sealed sleeping bag to test it.

The researchers found that simply lying down for those three days, even while on Earth, helped reshape the eyeballs slightly. But when using suction technology, there is no such effect.

The research emerges from years of experiments done to understand what happens to pressure in the brain when people are in space. One of these includes recruiting cancer survivors who still have their crowns on their heads after treatment, sending them on zero-gravity flights and then measuring brain pressure.

That study found that brain pressure is actually higher when lying on Earth than when in space. But on the ground, the pressure eases when people stand up – something astronauts can’t do.

The researchers behind this particular sleeping bag think it could eventually solve that problem, with only practical questions – such as how long astronauts need to stay in the bag – to pay. word.

“This is probably one of the most important medical problems discovered in the last decade for the space program,” said Dr. Levine. “I am very grateful to the volunteers who helped us understand and hopefully fix the problem.”

https://www.independent.co.uk/life-style/gadgets-and-tech/nasa-space-mars-eyes-sleeping-bag-b1973824.html Nasa may use strange sleeping bags to prevent astronauts from losing sight in space

JOE HERNANDEZ

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