It takes just two minutes for this super-fast test to tell if you're really colorblind

What do you see when you look at the blob above' I see just that: a blob. Some colorblind people will see, apparently, the number 21. Color-sighted folks will see a 74.This image comes from the Ishihara test, one of the oldest methods for determining whether or not a person is colorblind. Usually, a colorblind person has a reasonably good chance of figuring it out for themselves. Speaking for myself, I found out as a toddler when my dad started pointingout treesturning red, yellow, and orange for the fall and I had no idea what he was talking about.As part of a look into the science and experience of colorblindness, I had the chance to, er, test out many of the available online tests for colorblindness.The best one I found comes from a company called EnChroma. It's part of their marketing for very expensive sunglasses designed to make colors easier to distinguish for colorblind people. (I'm also currently reviewing a pair.)Here's my result:In other words, I have a fairly normal, boring form of the defect.Here's a link to the test, which takes just a few minutes to complete.Join the conversation about this storyNOW WATCH: Watch the Air Force drop 8 armored Humvees out of a plane from 5,000 feet
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