Paul Collins is a designer. He's also colorblind.

Colorblindness affects about 1 in 12 men and 1 in 200 women with northern European ancestry, and there are a lot of different types and causes for it. Not everyone who's colorblind is too put out by it, although there are some real ways colorblind people have been overlooked.

But for Collins, as an artist, colorblindness presented some particularly tough challenges.

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Heroes

Andy woke up with no sight and a tube down his throat.

On Sept. 28, 2011, an unknown person assaulted Andy. The attack knocked him unconscious, and when he woke up, he couldn't see anymore. The assault had damaged his optic nerve.

"I thought to myself, 'Hah. Whatever. You'll just open me up, reattach the wires and lights come back on again,'" recalls Andy. But that wasn't going to happen. "[The doctor] put his hand on my shoulder and said, 'I'm sorry, Andy.'"

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Heroes

Catrina Frost remembers looking at photos of her daughter, Cailee, as a baby and thinking one of her eyes looked off-center.

Cailee's older brother, Tanner, had been born a few years earlier with major vision problems, so at first, the mom of four wanted to believe she was just being overly cautious.

Later, a vision test revealed that Cailee did indeed have some problems with her eyes. She was severely nearsighted and suffering from amblyopia, where the function of one eye is reduced because the eye and the brain are not working together properly.

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