On ChrisHallquist's post extolling the virtues of money, the top comment is Eliezer pointing out the lack of concrete examples. Can anyone think of any? This is not just hypothetical: if I think your suggestion is good, I will try it (and report back on how it went)
I care about health, improving personal skills (particularly: programming, writing, people skills), gaining respect (particularly at work), and entertainment (these days: primarily books and computer games). If you think I should care about something else, feel free to suggest it.
I am early-twenties programmer living in San Francisco. In the interest of getting advice useful to more than one person, I'll omit further personal details.
Budget: $50/day
If your idea requires significant ongoing time commitment, that is a major negative.
Persistent dry eyes is probably the most significant risk. Sounds minor, but isn't.
The risk of dry eye is because LASIK cuts a flap in the cornea, severing many of the nerves that sense irritation and dryness. Other procedures like epi-LASEK or PRK don't involve cutting into the cornea, so their risk of dry eye is much lower. Unfortunately, those procedures are more painful and take months to heal. They involve scraping the epithelial cells off of your cornea, zapping your eye, and then letting them grow back. On the bright side, there is no flap that can be dislodged by a blow to the eye.
I got wavefront-guided epi-LASEK a few years ago. My vision went from 20/200 to 20/15. It can be pricey ($5k), but it's definitely the best money I've ever spent.