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John Eacott ... same here, HSP, albeit 1963. At the time it was the only pilot option for those with slightly deficient eyesight, which made it a bit tricky at BRNC as I wasn't really that keen on an RN career. Anyway, my cr@p flying skills solved the problem quite easily
I was never quite sure what the exemption was based on, but subsequent work on contact lenses later in my career [see previous post] certainly suggested that several factors may have been in play.