Did you know?

I learned this in my physiology lab today while we were talking about vision, and in a little side note, the professor talked about why eyes sometimes get red when a flash has been used in photography:

"The light is relfectiong on blood vessels at the back of the retina. If you have red eye a lot, it means your pupils are larger than those of most other people."

Who knew?? Just a tidbit to throw onto your random photography info sheet :-)