AgeusiaTissue DonorsDeltaretrovirus InfectionsDeltaretrovirus AntibodiesNucleic Acid Amplification TechniquesCorneaCorneal StromaKeratoplasty, PenetratingCorneal TransplantationEye BurnsKeratitisEpithelium, CornealCorneal DiseasesCorneal OpacityBurns, ChemicalEndothelium, CornealCorneal Dystrophies, HereditaryCorneal KeratocytesCorneal UlcerSodium HydroxideAmmonium HydroxideDescemet MembraneArtificial OrgansEye BanksEye Infections, BacterialKeratin-3AlkaliesEye Infections, FungalBlood DonorsLiving DonorsCorneal NeovascularizationKeratoconusRabbitsKeratan SulfateLasers, ExcimerOphthalmic SolutionsKeratitis, Herpetic