Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options questions only not deleted user 8693

Questions regarding medical aspects of space exploration, like effects of missions on human body during launch, flight and reentry.

39 votes
2 answers
8k views

Why do they have a Snellen eye chart on the ISS?

During a recent NASA broadcast, I noticed something in the background: It looks like a Snellen chart to me, but why would they have that on board? If that's not it, what is it then?
SE - stop firing the good guys's user avatar