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Modelling directionality of photoreceptors in the human eye as a function of monochromatic aberrations

Chao, Christopher, Iskander, D. Robert, Collins, Michael J., & Bennamoun, Mohammed (2000) Modelling directionality of photoreceptors in the human eye as a function of monochromatic aberrations. In the The 34th ASILOMAR Conference on Signals, Systems, and Computers, October 2000, Pacific Grove, CA.

Abstract

The cone photoreceptors of the retina are directed towards the centre of the eye’s pupil. It has been suggested that the photoreceptors directionality is linked to the optical aberrations induced by the cornea and crystalline lens in the eye. We show that the cone directionality can be modelled by a two-dimensional Gaussian function whose parameters vary according to the measured monochromatic aberrations of the eye. Our modelling is based on a hypothesis that cones directionality is optimised so that resulting quality of the retinal image is maximised. This criterion is equivalent to maximising the energy of the system response. This methodology might also be used in cost-effective automatic image enhancement systems for correcting higher-order aberrations without the need of applying adaptive optics.

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ID Code: 749
Item Type: Conference Paper
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2000 (please consult author)
Deposited On: 03 Mar 2005
Last Modified: 09 Jun 2010 22:23

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