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Link: How Eyesight is Affected in Space

Posted by Amanda Dexter on August 4, 2016 at 6:24 AM
Amanda Dexter
Dr. Amanda K. Dexter received her optometric training at Southern California College of Optometry in Fullerton, California, where she was Class of 2010 Valedictorian. She also completed a residency in Primary Care and Ocular Disease at the Veteran's Affairs Hospital in San Diego, California. Dr. Dexter is the Manager and Program Coordinator for OptoPrep, the premiere online study resource for the NBEO Part I & II.


Here is Chris Hadfield on how eyesight is affected in space.

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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.

Read the full article from ASC-CSA.gc.ca

Dr. Dexter's Take

Astronaut, Chris Hadfield, explains in this video that some people will report changes in vision while in space. In order to better understand ocular changes that may occur with zero gravity, astronauts now measure each other's intraocular pressures with a Tonopen, and transmit images of their fundus with an ophthalmoscope, as well as ultrasound images of the ocular structures. This is one of those things that you never probably even thought of, but it would be interesting to see the data once analyzed! 

The Top 15 Tips and Tricks for Studying for Part I of NBEO®

NBEO-Tips-large.pngWe’ve put together a ton of great tips and tricks for studying for Part I of NBEO along with two tailored study programs that will help you thoroughly prepare for the big day. Remember, you’ve made it this far and you can totally do this!

Some of the Top 15 Tips include:

  • Familiarize Yourself with the Test Format
  • Tackle the Weak Subjects Early
  • Start Sooner and Ease Into It
  • ...and 12 more!

NBEO Part I Study Guide The Top 15 Tips and Tricks for Studying for Part I

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