RC,
Just catching up on this thread so joining late. To further YY's post on corrective eye surgery, not only is it a bar to flying duties, but also a bar to joining the armed forces. The view of the Dir RAMC is that the long term effects of such surgery are unknown as the techniques employed in correcting actuity have changed a number of times recently and no long-term studies of more than 3-5 years are available. The other services fall (generally) into line with this thinking.
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Remember: all landings are controlled crashes!