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Cranial mononeuropathy VI is a nerve disorder that causes people to see two of the same image (double vision).
Alternative NamesAbducens palsy; Lateral rectus palsy
Causes, incidence, and risk factorsCranial mononeuropathy VI is damage to the sixth cranial (skull) nerve. This nerve, also called the abducens nerve, helps control eye movement.
Disorders of this nerve can occur with:
- Brain aneurysms
- Diabetic neuropathy
- Increased pressure in the skull (intracranial pressure)
- Infections (such as meningitis or sinusitis)
- Tissue damage from loss of blood flow (infarction)
- Trauma (caused by head injury or accidentally during surgery)
- Tumors
In some people, there is no obvious cause.
Because there are common nerve pathways through the skull, the disorder may affect other cranial nerves (such as the third or fourth cranial nerve).
SymptomsSymptoms may include:
- Double visionwhen looking to one side (people who are blind in one eye cannot have double vision)
- Headaches
- Pain
Tests typically show that one eye has trouble looking to the side, while the other eye moves normally. An examination shows the eyes do not line up -- either at rest, or when looking in the direction of the weak eye.
Your health care provider will do a complete examination to determine the possible effect on other parts of the nervous system. Depending on the suspected cause, you may need:
- Blood tests
- Head imaging study (such as an MRI or CT scan)
- Spinal tap(lumbar puncture)
You may need to be referred to a Doctor Who specializes in visual problems related to the nervous system (neuro-ophthalmologist).
TreatmentIf the health care provider finds a cause, medications called corticosteroids can reduce swelling and relieve pressure on the nerve. Sometimes, the condition may disappear without treatment. People with Diabetes may benefit from close control of blood sugar levels.
Until the nerve heals, wearing an eye patch may relieve double vision.
Expectations (prognosis)Treating the cause may improve the condition. Even if the cause is never found, the condition may improve.
ComplicationsComplications may include permanent vision changes.
Calling your health care providerCall your health care provider if you have double vision.
PreventionThere is no way to prevent this condition. However, people with diabetes may reduce the risk by controlling their blood sugar.
What else can I help you with?
Nuclei of cranial nerves V VI and VII are found in the?
Pons.
Which of the external eye muscles is controlled by cranial nerve VI?
The lateral rectus muscle is controlled by cranial nerve VI, also known as the abducens nerve. This muscle is responsible for moving the eye outward, away from the nose.
Which cranial nerves are not sensory?
Cranial nerves III (oculomotor), IV (trochlear), VI (abducens), XI (accessory), and XII (hypoglossal) are motor nerves only.
What cranial nerve is responsible for moving the eye laterally?
There are three cranial nerves that innervates muscle to move the eye. The main cranial nerve that controls eye movement is occulomotor nerve (CN III). It is responsible for inferior rectus, superior rectus, medial rectus, and inferior oblique. Lateral rectus muscle is innervated by abducens nerve (CN VI). Superior oblique muscle is innervated by trochlear nerve (CN III).
What nerve causes lateral movement of the eye?
abducens nerve
What three Cranial nerve is involved in rolling the eyes?
Eye movement is controlled by cranial nerves III, IV, and VI (Oculomotor, Trohlear, and Abducens, respectively). CN III innervates most of the muscles of the eye and is responsible for most eye movements.
Which cranial nerves conduct the sensory and motor impulses of the eye?
The Optical nerver or the Second Cranial nerve controls and relays information absorbed through the rods and cones of the eye. Eye movements (eye muscles), however, are controlled by several other cranial nerves including the Oculomotor, Abducens, and Trochlear nerves.
What is the function of cranial nerves?
cranial nerve I: olfactory:smell cranial nerve II:optic:vision cranial nerve III: oculomotor: 4 of 6 eye muscles cranial nerve IV: trochlear: cranial nerve V: Trigeminal cranial nerve VI: Abducens cranial nerve VII: Facial cranial nerve VIII: Vestibulochlear: hearing cranial nerve IX: Grosspharnxgeal: saliva formation cranial nerve X: Vegus cranial nerve XI: Acessory Spinal: trapizious movement cranial nerve XII: Hypoglosseal: toungue movement
What are the four primary structural components of pons?
four cranial nerves (V or trigeminal, VI or abducens, VII or facial, & VIII or vestibulocochlear)
What are the innervation of the eye?
Cranial nerve #2 - optic nerve - special sensory for vision Cranial nerve #3 - occulomotor nerve - motor for extraoccular muscles & parasympathetic to ciliary ganglion Cranial nerve #4 - trochlear nerve - motor for extraoccular muscle (superior oblique) Cranial nerve #6 - abduscens nerve - motor for extraoccular muscle (lateral rectus)
The cranial nerves that are involved in controlling eye movements are?
The cranial nerves involved in controlling eye movements are the oculomotor (III), trochlear (IV), and abducens (VI) nerves. These nerves innervate the extraocular muscles responsible for moving the eyes in different directions.
How many nerves are in your eyes?
Each eye has one nerve for vision, the optic nerve, Cranial Nerve II. Nerves are actually bundles of many nerve fibers. There are nerves that supply impulses for the muscles associated with the eyeballs so they can move are the Cranial Nerve III, Oculomotor, Cranial Nerve IV, Trochlear, and Cranial Nerve VI, the Abducens nerve.
