Shaken by an accident in New York City whose scars on his head are visible even now, a blind man from Turkey turned his chance collision into an opportunity to help millions.

Navigating the streets of the Big Apple while pulling a suitcase, and holding both a walking stick and smartphone to navigate — yet with only two hands — was too much to handle, recounted Kursat Ceylan.

After hitting a lamppost, “reflexively my hand went to my face, and oh, it was really bloody,” he told an audience in Berlin last year.

But that head cut planted the

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