The authors suggest that this 'eye' did not exhibit image-forming capabilities, and that its function was instead non-visual (possibly circadian). Comparison of photoreceptor ultrastructure across ...
Molecular mechanisms of verebrate photoreceptor light adaptation. The human visual system can discriminate increment and decrement light stimuli over a wide range of ambient illumination; from ...
Inherited retinal diseases (IRDs) are a group of monogenic disorders caused by mutations in more than 280 genes, and are characterized by progressive degeneration of photoreceptor cells in the retina.