Imagine not being able to see colors in their full spectrum. Imagine going to a store and instead of choosing a fruit from a festival of colors you get to see this:
This could be hard to imagine or understand for people accustomed to colored vision. Up to one in 12 men and one in 200 women suffer from red-green color-blindness—the most common color vision deficiency. Most people have three types of color-sensing cones in their eyes: red, green, and blue. The wavelengths of light that these three cones absorb have overlapping regions, and when a malfunctioning cone causes wavelengths to overlap even more, it results in poor color discrimination.
Luckily, there is now a solution to this problem—EnChroma glasses, which use a filter to cut out these overlapping wavelengths and allow for a clearer distinction between colors, especially red and green. The inventor is Don McPherson, who has a PhD in glass science at Alfred University. His invention has brought many people joy, wonder, and relief. Many touching reactions were filmed of color blind people seeing full color for the first time, and we get a glimpse of how much it means to them on the video below: