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The Human Phenotype Ontology (HPO) is downloaded weekly from The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at

Term:Color vision defect
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Accession:HP:0000551 term browser browse the term
Definition:An anomaly in the ability to discriminate between or recognize colors.
Synonyms:exact_synonym: Abnormal color vision;   Abnormal colour vision;   Abnormality of color vision;   Abnormality of colour vision;   Disturbed color vision;   Disturbed colour vision
 related_synonym: COLOR VISION DEFECT, SEVERE;   COLOR VISION DEFECTS;   Colour vision defect;   Colour vision defect, severe;   Colour vision defects;   Loss in color vision;   Loss in colour vision
 xref: MESH:D003117;   SNOMEDCT_US:23289000;   SNOMEDCT_US:367469000;   UMLS:C0009398;   UMLS:C0234629;   UMLS:C3552853

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Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the eye 0
        Abnormal eye physiology 0
          Abnormality of vision 0
            Color vision defect 0
              Color vision test abnormality + 0
              Dyschromatopsia + 0
              Monochromacy + 0
paths to the root