Forget tooth whitening -- eye whitening might be the next big thing!

Figure 1: Representative stimulus images of a young adult female. Sclera were either unmodified (top left), reddened (top right), yellowed (bottom left), or whitened (bottom right). Digitally colored images (red, yellow, or white) were contrasted with unmodified control images (It's Red Hot Science Week here at Seriously, Science? All week long we will be featuring science that focuses on the color red.)