Thin Corneas, High Prescription....PRK?

I do not consider you a LASIK candidate with your correction.  Understanding that, you may be a candidate for PRK or the ICL.  The quality of the vision may be slightly better with the ICL than PRK, but the difference is minimal.  The potential risk of serious complications is hugely less with PRK than the ICL as long as the curvature of your cornea is adequate.  Good luck.

you are not a borderline candidate. i will explain the math, so the confusion of conflicting answers goes away

your corneas are 475. you cannot have LASIK, because after wasting over 100 microns of tissue to cut the flap, you'd still need to remove almost 100 microns to get rid of your prescription.

the math looks like this:

475 initial - 125 flap - 100 laser ablation (removal of tissue) = 250 = minimum safe residual limit for LASEK

that means you won't be able to get enhanced if necessary, and you are at increased risk for keratoconus

so whoever told you that you could have LASIK, is, objectively, not the most conservative surgeon around

don't get PRK, i stopped performing PRK over a decade ago because it's very painful and has long recovery

instead, you should get an Advanced Surface Ablation, which is a LASEK or epiLASEK, where no flap is made, so we aren't wasting 125 microns of corneal tissue, which allows us to laser safely, see below:

475 initial - 0 (no flap made) - 125 (removed to correct your Rx) = 350 which is WAY more than 250 limit

this means you can be safely enhanced, and are NOT at risk for KC

i would not get an ICL if I were you, this is too risky to propose for anyone less than -10 Rx

i would also not get an intracorneal stromal inlay, they don't work great, and are somewhat experimental

i hope this helps you and others actually understand the objective numbers that are relevant to this common question of what procedure is right for people with high Rx or thin corneas--the answer 99% of the time is an Advanced Surface Ablation in my opinion (and not ICL or LASIK)