It is estimated that nearly half of the brain’s neurons are connected directly to the retina and involved in the processing of vision, attesting to the paramount importance of vision in brain functioning. For more than a century, scientists have investigated the visual system through studies of its complex anatomy, biochemistry, and physiology. Although we are still at the early stages of understanding vision, great progress is being made toward deciphering how the brain interprets shapes, objects, movement, location, and facial recognition. The optics of the cornea and lens project focused images of the external world onto the retina. However, the experience and conscious interpretation of visual phenomena involve structures in the cortex and brain stem. Scientists have only begun to decode and build neural network models to simulate and explain how what we experience as vision is processed and interpreted by the brain.
Neurology of vision Retina Retinal ganglion cells Visual pathway Eye and brain Optical system
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