The serial entrepreneur Ron Hamilton, who helped to invent the daily-disposable contact lens, sold his first company and patents to Bausch & Lomb for £33m. But he thought there was more to be done in the field, and in 1999 went on to found Provis, which makes contact lenses at its Glasgow plant. The company has introduced a lens that blocks ultra-violet light, and it claims to have sold 70m of them worldwide. Backed by Scottish Equity Partners and Scottish Enterprise, the company grew sales 48% a year from £1.4m in 2002 to £3m in 2004.
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