Corneal TopographyAstigmatismRefraction, OcularKeratoconusCorneaBiometryMyopiaKeratotomy, RadialKeratoplasty, PenetratingRefractive ErrorsOptometryHyperopiaRetinoscopyLenses, IntraocularEyeAnisometropiaAnterior ChamberVisual AcuityKeratomileusis, Laser In SituDiagnostic Techniques, OphthalmologicalSuture TechniquesLens Implantation, IntraocularCorneal DiseasesContact LensesScleraCorneal StromaPhacoemulsificationCataract ExtractionProspective StudiesReproducibility of Results