Vitamin K DeficiencyVitamin K Deficiency BleedingNight BlindnessVitamin KVitamin K 1BlindnessProthrombin TimeVitamin K 2HypoprothrombinemiasVitamin K 3ProthrombinElder Nutritional Physiological PhenomenaXerophthalmiaAntifibrinolytic AgentsVitamin A DeficiencyEye Diseases, HereditaryVitamin ABlood Coagulation TestsHemorrhagic DisordersPartial Thromboplastin TimeElectroretinography1-Carboxyglutamic AcidVitaminsOsteocalcinIntracranial HemorrhagesGenetic Diseases, X-LinkedHemorrhageProtein PrecursorsPotassium DeficiencyVitamin DDark AdaptationBlood Coagulation DisordersVitamin EVitamin K Epoxide ReductasesNepalInfant, NewbornVitamin B 12Blindness, CorticalVitamin D DeficiencyPrimary PreventionBiological MarkersRetinitis PigmentosaCathepsin KMyopiaVitamin B 12 DeficiencyRetinal Rod Photoreceptor CellsPedigreeRhodopsinVitamin E DeficiencyNight CareDietary SupplementsCarbon-Carbon LigasesAlbinism, OcularRetinal DiseasesRetinaVisual Acuity