ah ha!

i read the proof today. i was reading through organizing tips when i stumbled upon the proof i had been searching for years. i'd always heard that you should not read in dim light. and i was always thought that it was b-o-l-o-g-n-a.

"There is no harm whatsoever in reading in dim light," says Robert Cykiert, an ophthalmologist and a professor of ophthalmology at New York University Medical Center. "It's a total misconception. Reading in dim light is like sniffing hard to smell a faint odor."

from Real Simple via this link [it's tip #5]. tip #6 also gives proof that you will not catch a cold if you go outside with wet hair.