Seeing Colour in the Night

A company named Tenebraex is helping colour-blind people to travel. But it’s also developing goggles to help soldiers and physicians to see all colours at night, and not only the green colour of current night vision systems. These goggles, which should become available this northern summer, will be sold for about US$6,000 to the Army. But as states one of the founders of the company, with monochrome night vision, blood is the same colour as water. So these expensive night vision devices might be more targeted to Army physicians than to regular soldiers