@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

<https://concepts.sagepub.com/social-science/concept/emmetropia>
  skos:prefLabel "emmetropia"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/visual_acuity> .

<https://concepts.sagepub.com/social-science/concept/visual_acuity>
  skos:definition "Visual acuity is a measure of the keenness of sight. It has been studied, measured, and analyzed for thousands of years because it represents a fundamental limit in our ability to see. [Source: <a href=\"https://sk.sagepub.com/reference/perception/n370.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Perception; Visual Acuity</a>]"@en ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/emmetropia>, <https://concepts.sagepub.com/social-science/concept/contrast_sensitivity> ;
  skos:exactMatch <https://id.nlm.nih.gov/mesh/D014792.html> ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/visual_perception>, <https://concepts.sagepub.com/social-science/concept/vision_tests> ;
  skos:prefLabel "visual acuity"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/visual_perception>
  skos:prefLabel "visual perception"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/visual_acuity> .

<https://concepts.sagepub.com/social-science/concept/contrast_sensitivity>
  skos:prefLabel "contrast sensitivity"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/visual_acuity> .

<https://concepts.sagepub.com/social-science/concept/vision_tests>
  skos:prefLabel "vision tests"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/visual_acuity> .

<https://concepts.sagepub.com/social-science/concept/conceptgroup/concepts>
  a skos:Collection, isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member <https://concepts.sagepub.com/social-science/concept/visual_acuity> .