Corneal Wavefront AberrationAberrometryCorneal TopographyRefraction, OcularRefractive ErrorsAccommodation, OcularPupilAstigmatismLensesMyopiaKeratomileusis, Laser In SituRetinoscopesCorneaDiagnostic Techniques, OphthalmologicalLasers, ExcimerChromosome AberrationsVisual AcuityOptics and PhotonicsOptical DevicesKeratoconusTelescopesReproducibility of ResultsOphthalmoscopesAstronomical ProcessesOptical PhenomenaLenses, IntraocularHeart Conduction SystemEquipment DesignBody Surface Potential Mapping