Top US chief exec lost an eye - then he gained 'vision'

Sometimes, you need to take the measure of a man by not merely looking at the peaks he has climbed but the troughs he has overcome.

As the American chief executive officer under whose watch the German software giant SAP grew its customer base more than 10 times and quadrupled market capitalisation, the Bill McDermott imprint on the corporate world is already etched for all time.