PHOTORECEPTORS definitions

photoreceptors

(Humans as organisms) the rods and cones of the retina - they respond to light stimuli
Found on http://www.encyclo.co.uk/visitor-contributions.php

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photoreceptors

Specialized light receptors (rods and cones) present in the retina of the eye.
Found on http://www.thehorse.com/Glossary.xhtml?L=P

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Photoreceptors

Receptor cells in the retina that are sensitive to light.
Found on https://www.encyclo.co.uk/local/22842

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