Giulio Rapezzi

Jan 8, 2025 | mdpi.com | Antonio Moramarco |Luigi Fontana |Natalie di Geronimo |Giulio Rapezzi

1. IntroductionEctasia after penetrating keratoplasty (PK) is a late complication that can occur after the procedure, characterized by the thinning and steepening of the cornea at the donor–recipient junction [1] (Figure 1), potentially leading to high irregular astigmatism and significant visual impairment. It can occur years or decades after PK is performed for any indication, but it is relatively rare in non-keratoconus eyes [2,3,4,5].