Vision: 20/20 both eyes. Mild astigmatism and presbyopia.
http://blogs.suntimes.com/sweet/2010/02/obamas_2010_physical_test_deta.html
2011 report the same...no correction warranted.
http://www.scribd.com/nationaljournal/d/71065517-The-President-s-Periodic-Physical-Exam
Hmmmm....
Another theory is that these are fake glasses, and he’s wearing them because they have an audio feed in one of the earpieces.