Human visual ability is basically acquired after birth, the baby is not a lack of eye development, but the brain is not very good use of the eyes to observe the world, like a crappy photographer, holding a top-notch SLR can not shoot a good film.
The process by which babies begin to see the world is the process of training a network of visual processing neurons. The first lesson that a newborn baby needs to learn is to discern the contours of the object, and the first thing they see is a variety of colors and shades of the block, after learning to know that some of them are always moving together, this part of the color and light and shade changes form a fixed pattern, while others do not have this pattern, when the situation repeated, The final neuron network will evolve to recognize the pattern of the algorithm, so the world is no longer a color block, but an object, to object as a reference, control the eyes of the nerves also gradually learned to focus and tracking the movement of the object, the process about a month or two, the baby's eyes were initially confused, and then the saying is the eyes light, See the mother will laugh, see the Stranger will cry. The second lesson of vision is the understanding of the position of the object, which requires binocular coordination to reach the object distance or scene depth observation, the analysis of the optic nerve, as well as the coordination of various muscles of the eye to put forward higher requirements, after this stage, the baby can not only recognize, but also can be different distances on the object to produce different reactions. The third lesson is the intuitive grasp of the simple movement, which requires the tracking of moving objects, the need for neck and even body muscles, followed by the spatial orientation and basic topological structure of cognition and so on, in a word, the brain processing visual signal is not innate ability, but through a learning process to build up.
The human visual ability is basically a gradual acquisition after birth.
