Space travel damage eyesight
In nevesomosti intracranial pressure increases, which negatively affects the eyeball and the optic nerve. Interestingly, for men this effect appears twice as often than women.
Flights into space have many serious and still poorly understood consequences for our body — including blurred vision. This phenomenon and methods of combating it are studied, including in the framework of the NASA’s program “Health vision”, headed by Otto, Christian (Christian Otto) from the University space research Association in Houston (Texas, USA). About some results of his group tells NASA.
Otto with colleagues check the settings of view of the astronauts working on the International space station during their mission, and before and after it. Analysis of these data allows to state that 70% of people (out of 33 studied members of the crews of ISS) space flights really worsen your eyesight. Why is this happening? Apparently, scientists say, in weightlessness intracranial pressure in humans increases that affects different parts of the eye. Interestingly, for men this effect appears twice as often.
In particular, the seven astronauts aboard the ISS (they’re all men) found hypertensive retinopathy. At this violation, which is also referred to as edema of the optic nerve or optic disk edemas (ODE), due to elevated blood pressure povrezhdaemosti eyes. The degree of manifestation ODE is measured on a scale from 1 to 7, where 1 is the weakest degree and 7 is the strongest. Six of the astronauts diagnosed ODE of the first degree and another one — third.
Besides, who visited the International space station after the return to Earth may develop other dangerous eye diseases like glaucoma and idiopathic intracranial hypertension, which can lead not only blurred vision, and headaches and, potentially, a complete loss of vision.
“Data from our studies will help scientists develop measures to prevent violations similar ODE, and fight with them,’ said Otto. — They will allow us to develop targeted therapies to prevent problems”.
Also working for NASA scientists develop effective methods for non-invasive measurement of intracranial pressure. Now it is measured or spinal puncture, or a special probe through the hole in the skull.
Note that now NASA and Microsoft are developing new virtual reality headset Sidekick. which will help astronauts in their work on the ISS.