Visual acuity in insects.

  title={Visual acuity in insects.},
  author={Michael Francis Land},
  journal={Annual review of entomology},
  • M. Land
  • Published 1997
  • Biology
  • Annual review of entomology
The acuity of compound eyes is determined by interommatidial angles, optical quality, and rhabdom dimensions. It is also affected by light levels and speed of movement. In insects, interommatidial angles vary from tens of degrees in Apterygota, to as little as 0.24 degrees in dragonflies. Resolution better than this is not attainable in compound eyes of realistic size. The smaller the interommatidial angle the greater the distance at which objects--prey, predators, or foliage--can be resolved… 

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  • 1894
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