Elsevier

Vision Research

Volume 47, Issue 23, October 2007, Pages 2934-2942
Vision Research

Ocular aberrations in barn owl eyes

https://doi.org/10.1016/j.visres.2007.08.001Get rights and content
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Abstract

Optical quality in barn owl eyes is presented in terms of measuring the ocular wavefront aberrations with a standard Tscherning-type wavefront aberrometer under natural viewing conditions. While accommodative state was uncontrolled, all eyes were focused within 0.4 D with respect to the plane of the aberrometer. Total RMS wavefront error was between 0.06 and 0.15 μm (mean: 0.10 μm, STD: 0.03 μm, defocus cancelled) for a 6 mm pupil. The results suggest that image quality in barn owl eyes is excellent.

Keywords

Wavefront aberration
Tscherning principle
Modulation transfer function
Point-spread function
Convolution
Animal vision
Barn owl

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