#optical_aberration__opticalaberration__aberration__distortion  an optical phenomenon resulting from the failure of a lens or mirror to produce a good image
  supertype:  optical_phenomenon__opticalphenomenon  a physical phenomenon related to or involving light
  subtype:  chromatic_aberration__chromaticaberration  an optical aberration in which the image has colored fringes
  subtype:  spherical_aberration__sphericalaberration  a optical aberration resulting in a distorted image

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