Bats are not as blind as you think: Random trivia

Being an optometrist, I asked myself the next obvious question when I typed out that I was "blind as a bat" without my glasses.  Just how blind is a bat?

I found out that I am blinder than a bat.  Bats actually have excellent vision, plus sonar to boot.  I found this cool article here.  I don't have sonar, and I can't even see the big E on an eye chart without my glasses or contacts.

You're welcome.  I know your life is more full because of this fun fact.
http://fc08.deviantart.net/fs70/i/2010/342/9/3/blind_as_a_bat_by_sabrea-d34iknx.jpg (deviantart.net)



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