Spending time in space changes people. Not just their lives, such as eyesight or eye shape also their physical condition…

astronauts, After spending some time in space Their eyesight can deteriorate. For example, astronaut Michael Barratt had difficulty reading some things after returning from space. So what is the reason for this?

The shape of astronauts’ pupils and their eye qualities can change.

The eye of astronaut Michael Bratt in the image above you can see. There are some shape changes after six months in space. Barratt even says in his own words: “This is a medical problem that affects a large percentage of people in space.”

The fluid in their brains has an effect.

When astronauts go into space, the fluid that normally flows under their hearts also flows to their heads. gravity on Earth while pulling fluids down, In space this effect disappears.

This condition causes increased pressure in the head area, including the eyes, and as a result pressure on the optic nerve, causing eye problems, flattening of the eyeball and due to pressure on the retina It may cause loss of vision/blurred vision.

Doctor Benjamin Levine; He conducted an experiment to find out how this fluid and pressure affected the pupils and came to the following conclusions:

Unlike us, astronauts’ brains cannot rest under low pressure. When they are in weightlessness, the fluid stays on their heads. This light pressure changes in the shape of the eye and poor vision It could be the cause. That’s why they’re looking for a way to give astronauts’ brains a rest.

Dr. Levine: “You can wear it at night, it’s blood and… you can suck the liquid into the feet “And we’re working with UnderArmour to come up with a soft but comfortable clothing company, almost like a sleeping bag or pants, where you can clear your heart and brain while you sleep.”

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