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 colorblindness.
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-colored — including the Frisbee field.
At a tournament in Santa Cruz, Calif., in 2002, while standing on a grassy field dotted with orange goal-line cones, he lent a pair of glasses with the lenses to a friend who happened to be colorblind. “He said something to the effect of, ‘Dude, these are amazing,’ ” Mr. McPherson says. “He’s like, ‘I see orange cones. I’ve never seen them before.’ ”
Mr. McPherson was intrigued. He said he did not know the first thing about colorblindness, but felt compelled to figure out why the lenses were having this effect. Mr. McPherson had been inserting the lenses into glasses that he bought at stores, then selling them through Bay Glass Research, his company at the time.