Crew Studies How Space Affects Eyesight

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Crewmates at Mealtime

Expedition 50 crewmates (from left) Andrey Borisenko, Oleg Novitskiy and Peggy Whitson at mealtime in Unity module.

The Expedition 50 crew is continuing its investigation into vision changes and eye damage some astronauts have experienced after long-term missions in space. Living in the microgravity environment causes a headward fluid shift that may be causing pressure behind astronauts’ eyes resulting in visual and physical changes.

Two cosmonauts, Sergey Ryzhikov and Andrey Borisenko, and European astronaut Thomas Pesquet explored a possible solution to the upward fluid pressure. Borisenko donned the Lower Body Negative Pressure (LBNP) suit which pulls fluids down towards the feet. Ryzhikov and Pesquet then used an ultrasound scan and performed eye checks on Borisenko to determine the effectiveness of the LBNP suit.

On the station maintenance front, NASA astronaut Peggy Whitson installed vacuum access ports in the Harmony module. Commander Shane Kimbrough connected gas and water umbilical hoses in the Columbus lab module. He also updated supplies for the Human Research Facility that enables scientists to learn how astronauts adapt to living in space.

10 thoughts on “Crew Studies How Space Affects Eyesight

  1. Armen Ohan

    Dear Sirs ,
    Astronauts are a humans and they need time for rest and refresh their energies , hopefully you put that in their working schedule as well , in order to permit them doing their job properly and safely , but we didn’t recognize that during any previous spacewalks , please notify that if you don’t mind .
    Sincerely .
    Armen Ohan .

    Reply
  2. Armen Ohan

    Dear Sirs ,
    It is a very important to make an extra lab in the outsider of The International Space Station ( installing an extra lab outside The International Space Station under robotic arm control ) , permit to make some experiments upon lab rats to be able exposure these lab rats to cosmic rays directly ( several groups of lab rats exposures to the cosmic ray at a different periods – days , week , months – and compare the results with the groups of lab rats which spent the same while inside the International Space Station ) , to know exactly the effects of exposure cosmic rays upon life body also to know if spending long time inside The International Space Station have also the effects of living in space and to investigate if there are cosmic rays inside The International Space Station , also to compare the results with another groups of lab rats which spent the same period in a specific protected place on the board of The International Space Station , which could never any cosmic rays pass . to determine if these heath deterioration of are due to the cosmic rays or due to zero gravity and the possibility of improving or supporting the design of The International Space Station . ( also to get a table of values influences of a cosmic rays upon life mater per determined time unite ).
    also it is important to make this experiment upon some materials especially the materials of space suit , to know how the cosmic rays have influences upon that if the astronaut spends long time in space .
    Sincerely .
    Armen Ohan .

    Reply
    1. Armen Ohan

      Dear Sirs ,
      There is necessity of using some extra accessories in that lab on the board of The International Space Station , permits making the experiments in a different values of pressures and temperatures to observe a liquid shifting in a zero gravity and in the vacuum , to check this phenomena in a several probabilities, because there are so many factors have the influences on that , were it is a pressure, temperature , surface tension and the level of attraction between among these materials which in contact with each other ,,,, etc ( to obtain a chart and table clarifying liquids shifting in a different circumstances for different materials in a different values of temperature and pressures that could satisfy the needs in these fields of researches ) .
      Remember even the boiling temperature of the liquids changes , during changing the pressure therefore any liquid shifting of the fuel outside or inside of the storing vessel ( tanks) , may evaporate rapidly , in a low pressure atmosphere , note that ; the pressure is in low values or absent in the high orbits.
      Also we have to consider were could these shifting may occur ( next to burning chamber which have a very high temperature or next to storing vessels ( tanks ) which suffers of extremely reduce in the temperature , due to thermodynamic phases transfer of materials).
      Because the temperature have a high influences upon surface tension of materials as well as upon another physical and chemical characteristic as well ) therefore the circumstances could change the sort of these liquid shifting .
      In respect to to shifting liquids in the human body , we do know there are so many biological sensors working in the blood circulatory to organize the blood pressure in each organ with the heart pulses pressure , may the functions of these biological sensors distorts during a microgravity and could results unbalances in the blood pressure in the human blood circulatory .
      During a long time a space journeys , these distortions will stay a long time as long the time of the long space journey therefore it could result a permanent physical distortions upon blood circulatory system, that makes the astronauts keep suffering of a high liquid pressure in some specific organs .
      Therefore changing a design of a long space journeys spacecrafts is important and make it as ( cylindrical and to rotate to generate centrifugal force that may give the effects of the artificial gravity is required ) to prevent any health deterioration to the astronauts during and after the space journey .
      Sincerely.
      Armen Ohan .

      Reply
  3. Armen Ohan

    Messrs.
    The International Space Station .

    Dear Sirs,
    If the microgravity is the reason behind the upward fluid pressure on the back of astronauts as you mentioned in you previous reply , that’s mean unbalance or some dangerous distortions occurs in the blood circulatory during the microgravity circumstances , therefore designs of future space stations and spacecrafts of a long journeys should be cylindrical and rotate upon it’s axes to generate centrifugal force as an artificially gravity to prevent that health deterioration , but please read my second comment as well to show exactly how could we investigate for all these complex situations , please do not be hesitant to ask any frequently question about it may my English is not 100% , then I shall do my best to explain more .
    The situation their is complex among several constants and variables – microgravity, cosmic rays , gravity particles at speed 28000 km/h , Earth magnetic fields at same speed ,,, etc .
    Thank you International Space Station and good luck .

    2nd comment

    Dear Sirs ,
    It is a very important to make an extra lab outside of The International Space Station ( installing an extra lab outside The International Space Station under robotic arm control ) , thay could permit to make some experiments upon lab rats to be able exposure these lab rats to cosmic rays directly ( several groups of lab rats exposures to the cosmic ray at a different periods – days , week , months – and compare the results with the groups of lab rats which spent the same while inside the International Space Station ) , to know exactly the effects of exposure cosmic rays the life body’s and also to know if spending a long time inside The International Space Station have also the effects of living in space , also to investigate if there are cosmic rays inside The International Space Station , also to compare the results with another groups of lab rats which spent the same periods in a specific protected place on the board of The International Space Station , which could never any cosmic rays pass , to determine if the astronauts heath deterioration are due to the cosmic rays or due to the zero gravity. ! , and the possibility of improving or supporting the design of The International Space Station . It is a very important to get a table of values ( influences of a cosmic rays upon life mater per determined time unite ).
    It is also so important to make this experiments upon some materials , especially the materials of space suit , to know if the cosmic rays have influences upon these materials, if the astronaut spends a long time in the space .
    Sincerely .
    Armen Ohan .

    Reply
  4. Armen Ohan

    Dear Sirs ,

    I would kindly draw your attention for these points if you don’t mind please .

    The total weight of International Space Station ( Recently ) is 428889 kg = M
    (The Radius is 6374 kilometer ) . = R
    The Speed limit of the flight is 28000 km/h = V
    The Elevation of flight is 435 kilometer
    The Radius of the orbit which International Space Station from the center of the earth is equal to ( Earth Reduce + The Flight Elevation = 6374+435 = 6809 km.
    The Massa of International Space Station will generates a centrifugal force according to this formula :
    Centrifugal Force = M*V^2/R
    CF = 428889*( 27600)^2/6809
    CF = CF =4.9 *10^10 Newton. In the ISS center mass
    Where it is the same value of Earth acceleration force that point .
    We conclude of this simple calculations , that it is not Zero Gravity at that Elevation flight , but there is balance between The Centrifugal force of the mass of ISS and The Attraction Force of The Earth acceleration at that elevation , therefore all results of the experiments that been done previously and recently in the International Space Station should be upon two probability :
    1- Results of these experiments in The Zero Gravity.
    2- Results of these experiments when these material moves among gravity lines of the Earth attraction acceleration (4.9 *10^10 Newton) at the speed 28000 km/h .
    Where it is in the center gravity of ISS and it is equal to gravity forces in the elevation of ISS flight.
    Existence of gravity meaning of existence of Gravity Particles it may have some influences upon experiments specially the Biology experiments , and also astronauts healthy.

    If we see how live cells generates, we will find first chromosomic Dichotomy , then nucleus Dichotomy and finally cytoplasmic and the external skin cell Dichotomy . These processes are chemical reactions where it needs for ( a suitable time ) to be achieved properly , therefore any external factors could accelerate these chemical actions of live cells generations will distort the procedures of “Chromosomic Dichotomy” , thus it will result and generate a dangerous Viruses and Bacteria as well as generate distorted live cells , which we call it Cancer . If the experiments assures of The Zero Gravity is one of these factors, then we have to change a design of future Space Stations, to make it Cylindrical and Rotate on it axis, to generate centrifugal forces ( Artificial Gravity ) which it could gives astronauts the same Effects of The Earth Gravity in their long Space Journey , in order to avoid any genetic alterations or fluid pressure on the head and eyes in The Zero Gravity circumstances as a result of an imbalances in the pressure of The Blood Circulatory System.

    The Blood Arteries expands according to the amount of blood requested in any organ, but there are also some another external factors have some influences upon the level of these expands in The Blood Arteries, such external environment (Temperature, Pressure, etc.) and some Chemical Components, and may zero gravity is one of these factors. Therefore it seems to me that achieving an extra experiments upon some Lab Animals in (The Zero Gravity) is “ important ” , and some an extra tests are needed upon some of The Chemical Components that it may used (directly or even indirectly which mixes with food of astronauts to keep it long time fresh ) during their space journey, to find if there are some another side effects for living in the space long time.
    Note : according to a medical concept (People’s bodies are different in accepting the style of food that they eat ), therefore astronauts should not change the type of food that they every day used to eat in their normal life days on the earth, and some extra tests needed for the astronauts food on the earth , to find which foods are acceptable for their bodies before they start their Space Journey , may astronaut eat some foods during his Journey where he did not use to eat it in his normal life on Earth that may create some medical problems for long range .
    Sincerely.
    Armen Ohan.

    Reply
    1. Armen Ohan

      Not : Zero gravity is in Space were no any gravity field existence , but no moving among gravity lines or field at 28000 km/h . that may have hard influences upon life mater and astronauts health as well as result of most experiments .

      Reply
    2. Armen Ohan

      I suggest they change titles of experiments that been done on the board of The International Space Station from experiments in zero gravity to experiments while exposure these materials and experiments to the gravity field or gravity particles at speed of 28000 km/h , because the circumstances are different and the results shoul be different as well .

      Reply
  5. Armen Ohan

    Dear Sirs ,
    The vision changes and eye damage of astronauts after living in space , is merely indication of exposure their bodies to a cosmic rays , but is not all results , when we have this indication we have to know that their all bodies having effected , but it may appears on the eye’s more earlier , due to the high sensitivity of these sorts of live cells in the human body , and may appear some another effects on another organs as well but some more later , therefore we should check all organs as well .
    In another side we obviously know that during astronauts space walks , they wear space suits which covers and ( maybe protects ) their bodies of a cosmic rays , but there is only a thin glass covering their faces , it seems like it is insufficient to protect that area of their bodies , therefore this area could be more exposures to the cosmic rays .
    It is a very important to add an extra accessories to the space suit , ( such an Iron Magnetic Tissues) , which could give the same effects of the Earth’s magnetic field effect , to push a magnetic particles away and may also reduce or even prevents passing non-magnetic particles as well ( because this Iron Tissues could also been regarded as metallic shield as well ) , and also it is important to change the face thin glass cover of the space suit and replace it with a metallic cover combines a several thick prism, that could permits astronauts to see clearly , but prevents passing any rays have not the same characteristics of light .
    Because these particles are not such electromagnetic rays , and have different characteristics , therefore it could not passes through the prism to eyes and face of astronaut .
    Thus we could protect this area ( face and head ) of a cosmic rays ( magnetic and non-magnetic particles ) , while the astronauts make a space walk , Spacewalk is a big challenge exposure astronauts a big dangerous therefore we should supplying them with the required equipments and accessories helping the facing this challenge .
    Sincerely .
    Armen Ohan .

    Reply
  6. Armen Ohan

    Dear Sirs ,
    We do know what could happen during exposure a magnetic field to a metallic wire , but the science need much more experiments to know , what are the results during exposure a gravity field to living materials or life body.
    Because we do know that the gravity field composed of (Gravity Particles) as the magnetic fields are composed of electronic orbit , therefore the gravity field should have influences upon materials , as a magnetic field have many influences upon any materials having electronic conductivity , but we do need to determine the circumstances and effects .
    may the gravity field have influences upon living materials therefore it causes health deterioration of astronauts, who spending long time in Space at The International Station, exposure Earth gravity field at speed 28000 km/h .
    please be notified that there is not ( a zero gravity nor microgravity ) on the board of The International Space Station , but it is a circumstances of balance between the centrifugal force of mass center of the International Space Station and the Earth gravity force at the altitude flight of The International Space Station ,
    and everything there is in exposure to the Earth gravity field , and gravity particles, regardless the cosmic rays ( magnetic and non-magnetic particles , highly frequency electromagnetic waves on less through the glass windows over there ) and also Earth’s magnetic field specially during the space walk .
    Sincerely.
    Armen Ohan.

    Reply
  7. Armen Ohan

    Dear Sirs ,
    I would finally give this briefly explanations for what I expect of the reasons behind health deterioration of astronauts during their long space journey , because I hold on my shoulder the immoral responsibility to help in this humanity problems , but please do not be hesitant to ask any frequently question if you need for any more explanations .
    The zero gravity could be represented as any point in the space , where could not any gravity field existence , but could not represent as moving among gravity lines or field , at 28000 km/h , that may have hard influences upon living materials and astronauts health, as well as results of most experiments . Therefore I suggest they change titles of experiments that been done on the board of The International Space Station from The experiments that been done in the zero gravity to the experiments while exposure these materials of these experiments to the gravity field or gravity particles at speed of 28000 km/h , because when circumstances are different , the results will be different as well .
    We do know what could happen during exposure a magnetic field to a metallic wire , but the science needs much more experiments to know , what are the results during exposure a gravity field to living materials or life body.
    Because we do know that the gravity field composed of (Gravity Particles) as the magnetic fields are composed of electronic orbit , therefore the gravity field should have influences upon materials , as a magnetic field have many influences upon any materials having electronic conductivity , but we do need to determine the circumstances and effects , may the gravity field have influences upon living materials therefore it causes health deterioration of astronauts, who spending long time in Space at The International Station and exposure the Earth gravity field at speed 28000 km/h .
    Please be notified that there is not ( a Zero Gravity nor Microgravity ) on the board of The International Space Station , but it is a circumstances of balance between the centrifugal force of mass center of the International Space Station and the Earth gravity force at the altitude flight of The International Space Station and everything there is in exposure to the Earth gravity field , and gravity particles, regardless the cosmic rays ( magnetic and non-magnetic particles through the construction of The International Space Station , a high frequency electromagnetic waves for through the glass windows ) and also Earth’s magnetic field specially during the space walk .
    I am not focusing upon forces , but the gravity field and particles where it may have the influences upon results of researches and health of astronauts .
    The total mass of International Space Station ( Recently ) is 428889 kg = M
    (The Radius is 6374 kilometer ) . = R
    The Speed limit of the flight is 28000 km/h = V
    The Elevation of flight is 435 kilometer
    The Radius of the orbit which International Space Station from the center of the earth is equal to ( Earth Reduce + The Flight Elevation = 6374+435 = 6809 km.
    The Mass of International Space Station will generates a centrifugal force according to the following formula :
    Centrifugal Force = M*V^2/R
    CF = 428889*( 27600)^2/6809
    CF =4.9 *10^10 Newton at the ISS center mass of ISS , where it is the same value of the Earth gravity force at altitude flight of ISS .
    We conclude of this simple calculations , that it is not Zero Gravity at that altitude flight , but there is balance between The Centrifugal force of the center mass of ISS and The Attraction Force of The Earth gravity force at that altitude , therefore all results of the experiments that been done previously and recently on the board of the International Space Station should be upon two probability :
    1- Results of these experiments in The Zero Gravity.
    2- Results of these experiments when these material moves among gravity field of the Earth gravity force on the center weight of ISS were it is now (4.9 *10^10 Newton) at the speed 28000 km/h .
    Where it is in the centrifugal force of ISS were it is equal to gravity forces in the altitude of ISS flight and it is in balance circumstance .
    Existence of gravity upon that altitude meaning of existence of Gravity Particles and it may have some influences upon experiments and researches , specially the Biology experiments , and also health of astronauts , the gravity particles could pass through the construction of ISS , even if it fly at speed 28000 km/h .
    Note : some time I make mistakes during spell check , copy and paste via my smartphone with a google translate to check spelling or grammar , the it may confuses me when I read my comments .
    Sincerely .
    Armen Ohan .

    Reply

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