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Old 07-17-2018, 01:39 PM
lots2learn lots2learn is offline
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Join Date: Aug 2012
Location: Seattle WA
Posts: 136
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Quote:
Originally Posted by crystallographic View Post
Opthalmic facts:
At the age of 40 your eyes' need for light doubles.
At the age of 50, doubles again.
60? - doubles again.

That's downright depressing!
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