It is risky that our development relies on the environment because it is unpredictable. Perhaps their intent is to help proper brain development by making sure kids get real interaction. Peak in density of synapses in Visual Cortex at 8 mos. of age. 2.When axons first get there, they randomly innervate the whole cortex. Each eye has an equal number of columns of equal size.
Some eye muscles are weak at birth.
Eye cannot focus and is not used. Normally, there are a variety of cells in visual cortex that help us see many different orientations of objects. If the astigmatism is not corrected early, the orientation of the blurred area of the visual field will be non-represented in the cortex and the child will not regain ability to see that orientation of objects in the world. Paralleled by the kittens raised in vertical or horizontal striped environments who show visual neurons that then only have vertical or horizontal receptive fields. This effect can actually take place in early development or adult development.