THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -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. Your brain processes this sensory information so that you can see.

Detailed explanation-2: -The optic nerve is also known as cranial nerve II. It transmits visual information from the retina to the brain. Each human optic nerve contains between 770, 000 and 1.7 million nerve fibers. The eye’s blind spot is a result of the absence of photoreceptors in the area of the retina where the optic nerve leaves the eye.

Detailed explanation-3: -Visual field defects: Since the optic nerve is responsible for vision, any lesions along the length of the optic nerve, optic chiasm, optic tract, or optic radiation will present with different visual field defects.

Detailed explanation-4: -Also known as the second cranial nerve or cranial nerve II (CNII), it is the second of several pairs of cranial nerves. It transmits sensory information for vision in the form of electrical impulses from the eye to the brain. Damage to an optic nerve can cause loss of vision.