The period when he was blind, y'mean? I recall the doctor who treated him blamed himself to a degree, because he told Adolf that only men with a great purpose, grand, fine, important, vital men, could recover. And Hitler puffed himself up as a result of that. IIRC, the doctor got chased out of Germany by Himmler's chaps in the mid-thirties. But it's a while since I saw the article.