They have eight arms, one large head, and two large eyes. A closer examination of the eye of an octopus reveals that it is a very complex structure. An even deeper study of how the eye is integrated into the neurology of the octopus unveils how much more impressive octopus vision is. Succinctly stated, octopus vision is very advanced.
Gene Expression Profile of the Octopus Eye We made a gene-expression profile based on the occurrence frequency of the mRNAs in the octopus eye. The expressed sequence tag (EST) assembly system was used to obtain 2824 nonredundant sequences from a total of 16,432 clones.
Therefore, there is strong evidence that the evolutionary mechanisms for the camera eyes of humans and octopuses are subjected to similar gene expression profiles of the commonly conserved gene set, although the developmental processes of the human and octopus eyes are a bit different.