#cornea  transparent anterior portion of the outer covering of the eye; it covers the lens and iris and is continuous with the sclera
  supertype:  #tissue_layer__membrane  a pliable sheet of tissue that covers or lines or connects organs or cells of animals
  part of:  #eye
  subtype:  #arcus_senilis__arcussenili__arcus__arcu  an arc-shaped whitish deposit sometimes seen in the cornea

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