The eyes, tongue and fingernails may point to problems in a person's health.
(WZZM) - There's a possible breakthrough to help people who are colorblind see color.
Colorblindness is a genetic defect in the retina. To someone with the problem, colors overlap and look brown, unless you can block a narrow part of the spectrum.
That's where a new kind of glasses called EnChroma come in. The discovery was accidental, made by a man who let his friend borrow a pair of laser safety goggles.
"He said these are great, I can see the cones!" said Don McPherson, Vice President of Enchroma. "I didn't know what he was talking about, but it turned out he was severely colorblind. He could see the orange cones on the green grass for the first time in his life."
Clinical trials are underway for the new glasses. Click here to learn more about EnChroma.