One generally overlooked property of the Fourier plane ( or focal plane), formed by the retina of the eye is that time is brought into coincidence at this point, i.e., that all light rays that enter the eye reach the retina in time coincidence.
In fact, this is one of the most fundamental properties of the Fourier plane. Feynman calls this a “trick” of the nature of a condensing lens (such as the lens of the eye)……
To quote Feynman “…by slowing down the light that takes the shorter paths (i.e., though the center of the lens): glass of just the right thickness is inserted so that all of the paths (i.e., light paths) will take exactly the same time”.
The concept of a “zero time” for all light rays interacting with the retina? To what end?…. and seemingly never before considered. There is even experimental evidence in the vision field for considering short (quantum) time with the isomerization event of the retinal molecule within each receptor having been measured as ocurring in femtosecond ( 10>-15 sec( time. Although this result has been known for quite some time it’s meaning has not been considered with the view of the eye as a slow, frame-by-frame camera.
Also, considering that the aspect of spatial dimensionality is introduced in this concept (“optical antenna lengths”), as opposed to the dimensionless abstract notion of “a photon hitting something”, it would seem that light polarization may play a role in vision. Human vision is generally insensitive to polarization. An explanation for this seemed to me to lie in the hexagonal (in the fovea and peripheral retina) and octagonal (rods-around-cones point at 7 1/2 degrees) symmetry of the retina. Nature was therefore accepting six or eight different angles of polarization..leading to general insensitivity to polarized light. But… within the eye itself. polarization effects seem to exist (Haidenger’s Brush, etc.). What is the state of polarization (circular, etc.?) at the point where light interacts with retinal outer segment…?