The brain, spinal cord, and
optic nerves are referred to collectively as the central nervous system.
Previous attempts to stimulate the
optic nerve in the 1990s provided inconclusive results.
At necropsy, a conical, solid tan mass with 10 cm-length was observed involving the
optic nerve from the posterior aspect of the right globe to the optic chiasm.
One such easy and fancy investigation is transocular ultrasonography (TOU), which enables us to visualize the
optic nerve. Actually, the
optic nerve sheath contains fluid in which the
optic nerve is enclosed.
Bedside ocular ultrasound for measuring
optic nerve sheath diameters (ONSDs) has been proposed as a portable, noninvasive method to detect increased ICP in ED patients with head trauma rapidly.
Diagnostic value of the
optic nerve sheath diameter in pseudotumor cerebri.
OCT can be used to scan the
optic nerve and tell if the layer of nerve fibres is thinner than average.
Abnormal findings were seen in 32 of the patients evaluated, which findings included double ring sign (Figure 1) in 8% of the patients, macular stippling in 8%, intraretinal hemorrhage in 6%, small
optic nerve (Figure 1) in 5%, distal peripheral perivascular hemorrhage in 2%, and mottling (Figure 2) in 3%.
The cables connecting the screens to the computer would then be the
optic nerves at the back of the eyes and the computer would be the brain.
Sometimes some or most of the
optic nerve fibres can become damaged, resulting in a loss of vision, as the information carried by those fibres is unable to reach the brain.
Optic nerve Schwannoma is a very rare tumour described in literature.
Glaucoma is an eye disease that causes progressive irreversible damage of the
optic nerve and loss of vision field, leading to blindness.