AstigmatismRefraction, OcularCorneal TopographyRefractive ErrorsRetinoscopyMyopiaHyperopiaVisual AcuityKeratoplasty, PenetratingSuture TechniquesAnisometropiaCorneaCataract ExtractionCorneal DiseasesKeratoconusLens Implantation, IntraocularEyeglassesLenses, IntraocularLasers, ExcimerKeratomileusis, Laser In SituCorneal Wavefront AberrationAberrometryKeratectomy, Subepithelial, Laser-AssistedPseudophakiaVision ScreeningSuturesRefractive Surgical ProceduresKeratotomy, RadialCorneal Surgery, LaserPhotorefractive KeratectomyGlarePhacoemulsificationBiometryAmblyopiaCorneal TransplantationNylonsAlbinism, OcularEyelidsPterygiumOphthalmologyPhakic Intraocular LensesVision TestsAccommodation, OcularRetinopathy of PrematurityMydriaticsCorneal PachymetryLenses