Only Nike

When Camille Walters plays soccer, her normally brown eyes have a spooky red tint. That's because the 15-year-old wears tinted contact lenses that block certain wavelengths of light and help athletes see better.
Oh, and they look cool, too.

...The lens -- large enough to extend a ring around the iris -- comes in two colors: amber and grey-green.

The amber lens is for fast-moving ball sports, such as tennis, baseball, football or soccer. Grey-green is better for blocking glare for runners or helping a golfer read the contour of the ground.

Do they really help athletes see better? Probably as much as Phil Knight's shoes help you jump higher.