p091fig03.04 A cross-section of the eye, and top-down view of the retina, shao how the blind spot and retinal veins can occlude the registration of light signals at their positions on the retina.<BR>||  Eye: [optic nerve, ciliary body, iris,lens, pupil, cornea, sclera, choroid, retina]. Human retina: [fovea, blind spot, optic nerve]. see alsi <A HREF="images- Grossberg 2021/p092fig03.05 A cross-section of the retinal layers: light stimuli need to go through all retinal layers.png">cross-section of retinal layer</a>.