I had Radial keratotomy (manual incisions) in both eyes ten years ago. I think I was -3.25 in both eyes, and now have 6/6 vision. Never any problems. CAA were suspicious but gave class one with no restrictions. I believe they dont recommend it, and will ban you from flying for 1 year after surgery, but hey, if its your last resort - what have you to lose (other than your sight if his hand slips!)