Preoperative corneal sensation as measured by mean Cochet-Bonnet aethesiometry was equal between the inverted and conventional side cut groups but was better in eyes with an inverted side cut compared with a conventional side cut at all postoperative months ( inverted vs. conventional : @ month , @ vs. @ mm ; @ months , @ vs. @ mm ; @ months , @ vs. @ mm ; @ months , @ vs. @ mm ; all P @ ) .