How does Ortho-k compare to Lasik?

When the cornea is reshaped, either by Ortho-k or LASIK, the results are very similar.  For example, if you are very nearsighted, both techniques will result in some starbursting around lights at night.  The difference is that any side effects of LASIK will not be reversible, but with Ortho-k the eyes will return completely to their original shape in 30 days.  LASIK will only have to be applied every 10 yrs or so as the eyes change, where as in Ortho-k usually (but not always) your retainer lenses will need to be worn nightly.  With LASIK, tissue is permanently altered so measuring IOP (for glaucoma) can no longer be done accurately and neither can the eyes be measured precisely enough to achieve a reliable outcome for cataract surgery.  Neither of these problems apply to Ortho-k.