Abstract
The structure of the A. carolinensis retina is similar to that of diurnal lacertilians described in the literature. It possesses 10 layers. The visual cell layer is made up of single and double cones. No rods are present. The internal nuclear layer is thicker than the external nuclear layer. The nuclei and ganglion cells of light- and dark-adapted animals do not show any differences in staining. A prominent conus papillaris and a fovea are present. The epithelial pigment layer and the cones do not undergo any photomechanical changes. It was not possible to condition the chameleons to yield any behavioral responses.

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