GROSS ANATOMY

Detailed explanation-1: -For the 2nd (optic) cranial nerve, visual acuity is tested using a Snellen chart for distance vision or a handheld chart for near vision; each eye is assessed individually, with the other eye covered.

Detailed explanation-2: -Cranial nerve II, the optic nerve, controls the special sense of vision. As a direct extension of cerebral tissue, the retina is involved in the reception of photons and transmission of these light signals to the occipital cortex.

Detailed explanation-3: -The optic nerve is a bundle of more than 1 million nerve fibers. 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.

Detailed explanation-4: -Cranial Nerve II The examiner stands three feet away from the patient, and the patient focuses on the examiner’s eyes or nose. A pen or a finger is moved toward the center of the visual field in all four quadrants, and the patient will indicate when they can see the object.