Space Spectacles: NASA Evaluates Adjustable Astronaut Eyewear
Monday, August 16, 2010 - 09:14
in Astronomy & Space
Middle age is often accompanied by the onset of presbyopia , a condition whereby the eye's crystalline lens loses some of the youthful elasticity that enabled it to focus on nearby objects. The remedy for most people has been reading glasses or, for those already wearing prescription lenses, bifocals. For the handful of humans who work in the topsy-turvy environs of the space station or a spacecraft, presbyopia can be a bit more problematic because reading can take place at any number of odd angles, not to mention in microgravity, which tends to degrade vision. [More] NASA - Space station - Space - Technology - Glasses
