McPherson was a leading researcher at University of California at Berkeley working on the issue with a grant from the U.S. National Institutes of Health. He received a doctoral degree in glass engineering and in 2010, after five years of extensive research, decided to start up a company with his colleagues and market their product, which had been a success in clinical trials.

"Colour blindness is not just an aesthetic issue," he said. "It can even be mistaken as a learning disability in children, because books and classes are not prepared for people who cannot see red and green," he added.

The condition typically afflicts men because the recessive trait is passed on mainly to male offsprings. According to statistics, one in 12 men is colour blind, while one out of every 34 women has the condition.

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