Saccadic oscillations facilitate ocular perfusion from the avian pecten

@article{Pettigrew1990SaccadicOF,
  title={Saccadic oscillations facilitate ocular perfusion from the avian pecten},
  author={John D. Pettigrew and Josh Wallman and Christine F. Wildsoet},
  journal={Nature},
  year={1990},
  volume={343},
  pages={362-363}
}
THE evolution of the eye is constrained by two conflicting requirements—good vascular perfusion of the retina, and an optical path through the retina that is unobstructed by blood vessels. Birds are interesting in that they have higher metabolic rates and thicker retinas than mammals, but have no retinal blood vessels. Nutrients and oxygen must thus reach the neurons of the inner retina either from the choroid through 300 μm of metabolically very active retina, or from the pecten, a pleated… 
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