I've considered this but got put off by (minimal) risks.
I don't have a strong glasses prescription but it's getting more and difficult to play sports. For some reason I just can't get on with contact lenses. On about 3 occasions I've gone round to all the high Street opticians and more expensive independents, but whatever I've tried, the lenses just don't give good vision and a lot of the time, worse than not wearing anything at all!
I have the optometry World baffled.