I had lasik over PRK for a couple of reasons: Better correction of astigmatism, and smaller likelihood of corneal scarring, which can result in starring, coronas and halos around light sources, particularly at night. My night vision is at least as good now as it was before the surgery, with no need for glasses. The recovery time for lasik is also significantly shorter, particularly with the new "bladeless" procedure. Most people can return to work in 1-2 days.