Germany's opticians loathe Guenther Fielmann. By selling attractive spectacles at low prices in proper shops, he demystified the profession, uprooted a cosy oligopoly, and built up Europe's biggest chain of discount opticians, with a turnover last year of DM1 billion ($600m). Mr Fielmann's mass-market instincts are also focused on a different target. Is he the man to shine a light into what should be one of Germany's most profitable business niches?
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