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 ...

These photoreceptors consist of rods and cones. Rods allow the eye to sense light and see in ... an early age that she would ...

Second Sight The implant takes the place of the eye's photoreceptors But IEEE Spectrum reports that Second Sight actually discontinued its retinal implants - which effectively take the place of ...