Can extraocular muscles cause nystagmus?

Nystagmus is an involuntary, rhythmic, back-and-forth eye movement that is a common disease that can onset acutely or chronically, often caused by diseases of the visual system, extraocular muscles, labyrinth of the inner ear, and central nervous system. Nystagmus can manifest as decreased vision, tilted vision, strabismus, vibratory visual hallucinations and other symptoms, which bring trouble and pain to the patient's life, work and study. The inability of the eye to stably gaze at external objects leads to a decrease in the quality of vision in both eyes, especially in childhood, which adversely affects the normal development of vision, and also affects daily life such as driving in adulthood.

Many congenital nystagmus are also accompanied by a tilt of the head in order to achieve better vision at a certain angle of view than in front of the head, but this can affect its appearance and even cause asymmetry in facial development. Some patients experience significant changes in the degree of nystagmus when they see with one eye and both eyes at the same time.

Traditional Chinese medicine believes that nystagmus is mainly caused by liver and kidney yin deficiency, lack of essence, lack of nourishment of the eyes, bile depression and phlegm disturbance, qi stagnation and blood stasis.

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The cause of nystagmus is congenital dysplasia of the extraocular muscles, or lesions of the trochlear nerve, abducens nerve, and oculomotor nerve. Nystagmus cannot simply be regarded as an independent disease, but the clinical manifestations of other diseases, such as congenital idiopathic nystagmus, other types of nystagmus must be carefully found according to the symptoms, and the correct plan must be selected.

Among the common ophthalmic diseases, nystagmus is the most common symptom, which is caused by congenital dysplasia of extraocular muscles, or lesions of the nerves that control the movement of extraocular muscles, such as trochlear nerve, abducens nerve, and oculomotor nerve. Acquired nystagmus is not only a clinical manifestation of some diseases, but also whether it is congenital or idiopathic should be ruled out first, and the cause of the disease should be prescribed. Nystagmus is generally divided into the following types, let's learn more about it.

Extraocular muscle paralysis can also cause nystagmus. Lesions of the labyrinth of the inner ear and the central nervous system can also cause nystagmus.

Congenital cataracts, choroiditis, and keratitis can cause opaque spots or refractive errors, and although the patient has preserved some of their vision, the eyeball is always unable to be fixed, which can also cause nystagmus.

Congenital nystagmus is inherited or born with unknown causes. It is caused by diseases such as cataracts, amblyopia, etc. Extraocular muscle paralysis can also cause nystagmus. Lesions of the labyrinth of the inner ear and the central nervous system can also cause nystagmus.

Yes, nystagmus is referred to as nystagmus. It is often caused by diseases of the visual system, extraocular muscles, labyrinth of the inner ear, and the central nervous system.

Extraneous words will cause eye shocks! The extraocular muscles do not cause nystagmus.

The extraocular muscles are muscles that attach to the outside of the eyeball and are the opposite of the intraocular muscles (ciliary muscles, pupil opening muscles, and sphincters). The extraocular muscles are the striated muscles of eye movement, with 6 in each eye, which are divided into rectus and oblique muscles according to their travel direction, and the 4 rectus muscles are superior, inferior, internal and external rectus; The two oblique muscles are, the superior oblique muscle and the inferior oblique muscle.

No, it's nystagmus, and the shaking of the eyes may be eye strain, or muscle spasms, not nystagmus.

There are different types of nystagmus causes, mainly seen in the following:

1. Congenital essential nystagmus: also known as congenital motor nystagmus, which is not clear at present, and no intracranial abnormalities have been found. Its clinical manifestations are throbbing tremor, which remains unchanged for life, and the patient has a median and compensated cephalic position;

2. Oculogenic nystagmus: pendulum tremor due to poor vision can be caused by congenital cataract, lowe syndrome, albinism and other ophthalmic diseases. In addition, there are nystagmus associated with strabismus, such as nystagmus block syndrome, in which children will have esotropia;

3. Central nystagmus: mostly manifested as simple horizontal, vertical or rotating nystagmus, such as intraventricular hemorrhage after birth, acquired nystagmus can be caused by intracranial tumor compression. Certain metabolic disorders affect brain function, such as lipofuscinosis, and vision loss accompanied by nystagmus;

4. Vestibular nystagmus: mostly caused by acute labyrinthitis, which can be accompanied by vertigo;

5. Other reasons: such as infant nodding spasms, which are more common in infants from 4 months to 1 year old, and less common after 3 years old, as well as toxic nystagmus from drugs, such as organophosphate poisoning.

If you experience acquired nystagmus, it is advisable to seek medical attention as soon as possible.

The causes of nystagmus are mainly caused by diseases of the visual system, extraocular muscles, and the central nervous system. Nystagmus may occur due to changes in the retina or refractive mediator. There are also nystagmus patients who have been in a place where the light is not very good for a long time.

Nystagmus** is often caused by disorders of the visual system, extraocular muscles, labyrinth of the inner ear, and the central nervous system. Clinical manifestations of nystagmus, there are two types of nystagmus. In the beating type, the eyeball moves in a reciprocating motion with a marked difference in speed, when the eye slowly turns in the other direction.

Swing type, the swing of the eye is like a pendulum, there is no fast phase and slow phase, the speed and amplitude are equal, and it is more common in patients with dark eyes and amblyopia. Nystagmus is not a simple disease, it is a kind of low vision caused by various reasons, causing the eyes to be unable to see. Because when our eyeball looks at objects, it forms this kind of vision through the macula.

Motor nystagmus** is mainly central or efferent nerve pathways, with normally developed eyes, median, compensated cephalic position, and impulsive nystagmus. Clinical diagnosis is necessary to be definitively symptomatic**.

1. Patients with nystagmus may be because they have been in a place with bad light for a long time, and being in such a place for a long time will make the eyeball vision impaired, which will lead to nystagmus, and the eyeball cannot be fixed in one place.

2. Congenital amblyopia, congenital cataract, high myopia, extraocular muscle paralysis and other diseases may cause nystagmus. Therefore, if there is nystagmus, it is necessary to go to the hospital for examination in time to check whether it is caused by a certain disease. Retinal or refractive errors can also cause nystagmus, and patients can have symptoms of amblyopia, in which case the patient can see part of it, but the eye cannot be fixed, and nystagmus will occur.

3. Genetic factors may also cause the symptoms of nystagmus. Patients with nystagmus due to genetic factors usually have eye movements when they are at rest. When the patient looks in either direction, the degree of nystagmus increases, and the patient may even have symptoms of head jolting or pointing.

4. Lesions of the central nervous system can also cause nystagmus. Lesions of the central nervous system cause symptoms of rotational and vertical tremor. Compression, deformity, or intoxication of the brainstem with antispasmodic drugs can cause vertical tremor to occur, which in turn can lead to nystagmus.