Color blindness-correcting contact lenses

Imagine seeing the world in muted shades—gray sky,
gray grass. Some people with color blindness see everything this
way, though most can’t see specific colors. Tinted glasses can
help, but they can’t be used to correct blurry vision. And dyed
contact lenses currently in development for the condition are
potentially harmful and unstable. Now, in ACS Nano, researchers
report infusing contact lenses with gold nanoparticles to create a
safer way to see colors.