Vitamin E DeficiencyNight BlindnessVitamin EBlindnessAtaxiaEncephalomalaciaalpha-TocopherolSeleniumXerophthalmiaVitamin A DeficiencyEye ManifestationsEye Diseases, HereditaryVitamin AHyperostosis, Cortical, CongenitalMalabsorption SyndromesElectroretinographyMuscular DiseasesAntioxidantsVitaminsGenetic Diseases, X-LinkedDark AdaptationVitamin DLiverNepalSuccinatesLipid PeroxidationHemolysisVitamin B 12Glutathione PeroxidaseBlindness, Cortical