Accidental spectacles find niche among the colour-blind
New York
THE eyeglass lenses that Don McPherson invented were meant for surgeons. But through serendipity, he found an entirely different use for them: as a possible treatment for colour blindness.
Mr McPherson is a glass scientist and an avid Ultimate Frisbee player. He discovered that the lenses he had invented, which protect surgeons' eyes from lasers and help them differentiate human tissue, caused the world at large to look candy-coloured - including the Frisbee field.
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