Cuttlefish, like other cephalopods, have sophisticated eyes. The organogenesis and the final structure of the cephalopod eye fundamentally differ from those of vertebrates such as humans.[14] Superficial similarities between cephalopod and vertebrate eyes are thought to be examples of convergent evolution. Wanna cuttle vintage shirt The cuttlefish pupil is a smoothly curving W-shape.[15][16] Although cuttlefish cannot see color,[17] they can perceive the polarization of light, which enhances their perception of contrast.

They have two spots of concentrated sensor cells on their retinas (known as foveae), one to look more forward, and one to look more backward. The eye changes focus by shifting the position of the entire lens with respect to the retina, instead of reshaping the lens as in mammals. Unlike the vertebrate eye, no blind spot exists, because the optic nerve is positioned behind the retina. They are capable of using stereopsis, enabling them to discern depth/distance because their brain calculates the input from both eyes.