Most are military pilots, but there's a civil school called the National Test Pilot School. You can find them here:
www.ntps.com
Unfortunately you will have departed with 2 arms and both legs by the time you could finish this course. 2 hrs in their Draken would set you back around $17,000, so a years worth of course would be a wee bit steep.
However, you don't have to be a TP to do test flying - it depends on what you are doing.
Strangely enough Red Arrow David Slow would fit the bill but the name doesn't ring a bell.
It rings a bell with me - he was RAF Harrier display dude from 20 Sqn last year or the year before, or both! The RAF's rule on eyesight is fairly clear - nigh on perfect when you join, but deterioration after this is natural and hence expected.
My personal advice on Lasik - wear glasses - I haven't heard of the long term effects of the treatment, and until I have, I would prefer the specs. Also you never know, even if people are happy to accept people with the treatment now, they may not in the future. For anyone considering a flying career in the UK forces DO NOT go near it.
Charlie.