The time required for laser vision correction is proportional to the severity of the refractive error and the complexity of corrections needed.

“yeah for sure more to shave so like minus two it might be 15 seconds you know yeah maybe it's yeah so minus 10 would be how long like a minute or so you know it depends on the laser it depends on the overall treatment size how much astigmatism and how many are you fixing the astigmatism as well and all the little distortions how much coma trefoil all these these these are physics terms that i didn't really think i would become fluent in but all these little optical distortions that that optical physicists are very familiar with we measure and do our very best to eliminate with laser vision correction”