The patented lens technology simply perfects what the eye does naturally: it read the changes in skin tone brought on by a flush, bruise, or blanch. The filters can be used in a range of products from indoor lighting (especially for hospital trauma centers) to windows, to perhaps eventually face cream. For now, one of the most promising applications is in glasses that correct colorblindness.
As a veteran entrepreneur, founding Clickbank and Keynetics among other ventures, Barber wasn’t interested in chasing the perfect color filter for a demo pair of glasses. “If you look for perfection you could spend a million dollars. And it is just a waste of time,” he says. A bunch of prototypes were created, and rejected. Some were too shiny, others too iridescent. “We finally found something that worked to get the tone spectrum we wanted and to produce a more interesting view of the world.”
What they got was about 90 percent of the way to total color enhancement across three different types of lenses: Oxy-Iso, Hemo-Iso, and Oxy-Amp. While the Amp, which boosts the wearer’s general perception of blood oxygenation under the skin (your own vision, but better), is the centerpiece of the technology, it was the Oxy-Iso, the lens that isolates and enhances the red-green part of the spectrum, that generated some unexpected feedback from users. Changizi says the testers told them that the Oxy-Iso lens appeared to “cure” their colorblindness.
Changizi knew this was a possibility, as the filter concentrates enhancement exactly where red-green colorblind people have a block. Professor Daniel Bor, a red-green colorblind neuroscientist at the University of Sussex tried them and was practically giddy with the results. Changizi published Bor’s testimony on his blog: “When I first put one of them on [the Oxy-Iso,], I got a shiver of excitement at how vibrant and red lips, clothes and other objects around me seemed. I’ve just done a quick 8 plate Ishihara colour blindness test. I scored 0/8 without the specs (so obviously colour blind), but 8/8 with them on (normal colour vision)!”
Despite these early testimonials, the pair thought that the O2Amp glasses would be primarily picked up by hospitals. The Hemo-Iso filter enhances variations along the yellow-blue dimension, which makes it easier for healthcare providers to see veins. “It’s a little scary to think about people drawing blood who can’t see see the veins,” Barber says. EMT workers were enthusiastic users thanks to the Hemo-Iso’s capability of making bruising more visible.single page
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.