High-tech sleeping bags can effectively solve astronauts' vision problems

Science and Technology Daily News (intern reporter Zhang Jiaxin) Astronauts may face eye problems when "travelling" in space - space neuro-eye syndrome (SANS), a disease characterized by progressive flattening of the eyeball, swelling of the optic nerve and vision obstacles

On Earth, every time people get up, gravity "pulls" bodily fluids back from the brain

The disease, called SANS, has plagued scientists for more than a decade and has been one of the biggest health problems in human space exploration

In the experiment, a volunteer lay on a bed for 72 consecutive hours

The researchers found that while just lying flat for three days created enough pressure for bodily fluids to slightly change the shape of the eyeball, this change did not occur when the new sleeping bag was used

According to NASA records, more than half of astronauts serving at least six months on the International Space Station have vision problems