Tag Archives | Color Blindness

The ‘Forbidden Colors’ Our Eyes Can’t See

crane-piantanidaCan you imagine a reddish green? Not the muddy brown produced by mixing red and green paint, but a gloriously vivid color that looks a bit like red and a bit like green. How about a color that looks like a mix of blue and yellow, yet isn’t greenish? These exist, but are virtually impossible to see or envision — except with the help of retinal stabilization. Someday we may wear goggles to see the forbidden colors previously off limits. Via Life’s Little Mysteries:

“The observers of this unusual visual stimulus reported seeing the borders between the stripes gradually disappear, and the colors seem to flood into each other. Amazingly, the image seemed to override their eyes’ opponency mechanism, and they said they perceived colors they’d never seen before.”

Even though those colors exist, you’ve probably never seen them. Red-green and yellow-blue are the so-called “forbidden colors.” Composed of pairs of hues whose light frequencies automatically cancel each other out in the human eye, they’re supposed to be impossible to see simultaneously.

Read the rest
Continue Reading

Is It Wrong To Cure Colorblindness?

One in twelve men suffers from colorblindness, though “The good news here is that these folks are simply missing a patch of DNA… which is just the kind of challenge this Millennium is made for. Enter science.”

But NPR’s Moira Gunn (from Biotech Nation) now asks a provocative question. Is it wrong to cure colorblindness?

She reports on an experiment that used a virus to introduce corrective DNA into colorblind monkeys. (“It took 20 weeks, but eventually the monkeys started distinguishing between red and green.”) Then she asks, could it be viewed differently? “Are we trying to ‘normalize’ humans to a threshold of experience?

“Slippery Slope. Enter here. Watch your step…”

Read the rest

Continue Reading