Hi Gareth,
Any operation only has the aim to improve the corneal surface to make vision correction easier.
Not to nit pick but mini ARK for example is definitely not designed to create a surface that is easier to correct. Actually this is one of the main points that got my attention in the first place. Personally I could not see the logic of having say, a graft, and then also having to deal with contacts lenses post op.
For me at least mini ARK offered a method were the surgery was intended to correct the problem not make the corneal surface ready for even further correction. Also, as has already been stated, mini ARK in no way prohibits an eventual graft should the need arise.
It is obviously not in anyway a simple eqastion to have mini ARK, there are many factors that contribute to whether a patient is appropriate for the procedure or not. But I do feel it is one that offers aspects for rehabilitaion that many other options may not.
Hari