Bilateral Excimer Laser-Assisted Penetrating Keratoplasty for Genetically Verified Autosomal Recessive Cornea Plana (CNA2) – Ultrastructural and Immunohistochemical Findings - Kohlhas, Paul; Seitz, Berthold; Schlötzer-Schrehardt, Ursula; Flockerzi, Fidelis; Daas, Loay; Berger, Tim (Klinische Monatsblätter für Augenheilkunde, 2025)