MathematicsPsychometricsReproducibility of ResultsVision, LowSickness Impact ProfileVisually Impaired PersonsQuestionnairesFactor Analysis, StatisticalDisability EvaluationActivities of Daily LivingModels, StatisticalQuality of LifeFoot Deformities, AcquiredOutcome Assessment (Health Care)Cross-Cultural ComparisonHealth Status IndicatorsHealth Planning CouncilsSeverity of Illness IndexArtificial LimbsVisual AcuityVision DisordersTranslationsMotor Neuron DiseaseUpper ExtremityTranslatingCultural CharacteristicsModels, PsychologicalMobility LimitationPsychiatric Status Rating ScalesStrokeLanguageRecovery of FunctionMotor SkillsHealth StatusChronic PainData Interpretation, Statistical