Multicell-layer membrane in the back of the eye that is sensitive to light and transduces incoming optical information into signals that are necessary for vision.
Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 800 (https://doi.org/10.1515/pac-2015-1202)