An Eagle's Eye: Quality of the Retinal Image

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Science  26 May 1972:
Vol. 176, Issue 4037, pp. 920-922
DOI: 10.1126/science.176.4037.920


The optical quality of a living eagle's eye was determined by an ophthalmoscopic method. The performance of the eye was substantially better than that reported for humans, but did not confirm some of the wilder claims made for such birds.