Helmut had suffered a bizarre accident that affected his eyesight.

The doctor said it would be temporary, but for the next 4 weeks, he will have to adjust how he did some things. The accident had affected his focal length. He was only able to focus on objects that were a distance of 6 feet or more away from him.

Helmut was used to shaving close in front of his bathroom mirror. Now, after the accident, how close could Helmut get to the mirror to to see his face clearly enough to shave?