Two engineers at Microsoft have developed an iOS app that makes it possible for people with color blindness to distinguish colors using an iPhone camera and an app called Color Binoculars. Here is a description from the developer:
Using your iPhone’s camera, Color Binoculars adjusts the colors that you see to replace difficult color combinations, like red and green, with more easily distinguishable combinations, like pink and green. Color Binoculars supports all three common forms of color blindness. Whether it’s picking out flowers for a loved one, experiencing the beauty of nature, or choosing matching clothes for your outfit, let Color Binoculars help you take a better look at the world.
Color Binoculars is a Microsoft app that was developed as part of the Microsoft Garage Project.