In this question we will answer what happens if the lesion is present in sections numbered 1-S in the figure, the main cause will always be partial or total loss of vision.
If a lesion were present?
Damage to an optic nerve or one of its pathways to the brain results in vision loss.
The optic tract, also known as the optic tape, is the intracranial continuation of the optic nerve.
Optic chiasm injuries, usually caused by pituitary and hypothalamic tumors or aneurysm compressions, cause compression of the fibers of the nasal hemiretinas bilaterally, where they cross the midline at the optic chiasm.
The lateral geniculate nucleus receives axons from the optic nerve and transmits them to the visual cortex (in the occipital lobe).
Learn more about optic nerve in brainly.com/question/10878075