GENERAL HISTOLOGY

Detailed explanation-1: -The LGN neurons (4° visual afferents) send their axons in the internal capsule to the occipital lobe where they terminate in the striate cortex (Figure 15.5). The LGN axons fan out as the optic radiations of the internal capsule and travel through the temporal, parietal and occipital lobes.

Detailed explanation-2: -The optic nerve is critical to your vision. It’s an extension of your central nervous system, which includes your brain and spine. The optic nerve transmits electrical impulses from your eyes to your brain.

Detailed explanation-3: -The visual pathways comprise the optic nerve, optic chiasm, optic tract, optic radiation and the visual cortex in the occipital lobes. Nerve impulses arising in the retina travel via the optic nerve to the optic chiasm.

Detailed explanation-4: -The optic nerves from both eyes meet and cross at the optic chiasm, at the base of the hypothalamus of the brain. At this point, the information coming from both eyes is combined and then splits according to the visual field.

Detailed explanation-5: -The information from the retina-in the form of electrical signals-is sent via the optic nerve to other parts of the brain, which ultimately process the image and allow us to see.