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Chris Hadfield on how eyesight is affected in space

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Published on Apr 9, 2013

2013-04-09 - To better understand how vision is impacted in the space environment, astronauts use onboard medical instruments like the tonometer to examine the health of eyes. Commander Chris Hadfield gives us an inside look at these instruments and demonstrates how they work.

Credits: Canadian Space Agency and NASA

Expedition 34-35 Web page: http://www.asc-csa.gc.ca/eng/missions...

Living in space Web page: http://www.asc-csa.gc.ca/eng/astronau...

Find out more about this video: http://www.asc-csa.gc.ca/eng/search/v...

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