II — Optic nerve
Nervus opticus (II) · II — zrakový nerv
Nervous system
Looks like
A thick nerve leaving the back of each eye, meeting its partner under the brain.
What it does
Carries sight; strictly it is a tract of brain, not a nerve.
Keeping it well
Eye tests, blood pressure and sugar; sudden loss of vision in one eye is an emergency.
Its parts
Related conditions
- Amyloidosis (AL and ATTR)
- Botulism
- Chickenpox (varicella)
- Chronic neuropathic pain
- Chronic pain syndrome
- Fibromyalgia
- Glaucoma
- Guillain-Barré syndrome
- Idiopathic intracranial hypertension
- Lyme disease
- Multiple sclerosis
- Myasthenia gravis
- Neurofibromatosis type 1
- Neuromyelitis optica spectrum disorder
- Peripheral neuropathy
- Pituitary adenoma
- Rabies
- Restless legs syndrome
- Shingles (herpes zoster)
- Tetanus
- Vitamin B1, C and other deficiencies