What causes nystagmus?

Nystagmus**: 1. Ophthalmic nystagmus**: nystagmus caused by low vision making it difficult to form fixation reflexes.

2. Vestibular nystagmus**: nystagmus due to lesions of the inner ear and vestibular ear. 3. Central nystagmus**:

Nystagmus caused by lesions of brain nerve pathways caused by inflammation, tumors, degeneration, trauma, and vascular diseases. 4. Congenital idiopathic nystagmus**: The cause of pediatric nystagmus is mainly caused by hypoxic damage to the brain and abnormal development.

Especially during the mother's pregnancy and childbirth, due to intrauterine hypoxia, resulting in fetal brain hypoxia, prolonged labor during labor, dystocia or birth trauma, etc., will cause nystagmus in the child.

Congenital nystagmus: nystagmus** is mainly caused by hypoxic damage to the brain and developmental abnormalities. Especially during pregnancy and childbirth, nystagmus can be caused by factors such as lack of oxygen in the uterus, hypoxia of the patient's brain, prolongation of labor during labor, dystocia or birth injury.

99% of cases are congenital nystagmus.

Acquired nystagmus: traumatic brain injury, poisoning, brain tumors, albinism, fundus lesions, lesions caused by other diseases, etc.

There are either family heredity or congenital endowment deficiencies.

Nystagmus is just one symptom. There are many types of primary diseases, but many of them are genetic, and congenital nystagmus is common.

The eyeball moves back and forth at a marked different speed, and when the eye slowly turns in the other direction to a certain extent, it suddenly returns in a rapid movement. This type of tremor has chronic and fast phases, with chronic being physiological and fast being corrective movements. The fast phase direction is the direction of nystagmus, and the fast phase is related to **.

Congenital endowment is insufficient, liver wind internal movement or heredity.

It can be congenital or inflicted.

It could be some kind of eye disease or middle ear disease.

Nystagmus is generally a nerve problem, the oculomotor nerve controls the eye swing, the trochlear nerve controls the balance of the eyeball, the optic nerve vision, etc.

Branched sixty is a hereditary congenital nystagmus.

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.

Patients with congenital amblyopia, congenital cataracts, high myopia and other diseases, have weak symptoms, the eyeball cannot be fixed, and nystagmus will occur. Being in a poorly lit place for a long time, and not being able to fix one's vision in one place can also lead to nystagmus. If you have symptoms of nystagmus, be sure to go to the hospital for a check-up**.

These lesions often cause cataracts, refractive errors, choroiditis, and some patients develop the disease at an early age, although amblyopia symptoms.

Nystagmus can be divided into congenital nystagmus and acquired nystagmus, the causes of congenital nystagmus include albinism, cataract and ocular malformations, etc., acquired nystagmus may be caused by central nervous system lesions, such as cerebellar lesions, vestibular neuronucleus lesions, etc.

It is normal for the eyes to move from side to side in everyday life when people are conscious. However, there are also some people who involuntarily move their eyes back and forth, and the eyes are rhythmic when moving, either rotating or vertical. In fact, this condition is not normal, it belongs to nystagmus, so what causes nystagmus?

1. Retinal or refractive medium lesions These lesions often cause cataracts, refractive errors, choroiditis, and some patients will be affected at an early age, although they will have amblyopia symptoms, but still preserve their vision, and such patients often cannot fix their eyes, and then form nystagmus. If the patient is in a poor light environment for a long time, he will also have vision fixation disorder and wobble tremor. 2. Vestibular labyrinth lesions If the vestibular nerve or vestibular nerve nucleus is damaged, the vestibular nerve will react too high or too low, and these adverse symptoms will cause nystagmus.

Acute vestibular labyrinth lesions cause contralateral tremor of the eyeball, accompanied by tinnitus, nausea and vomiting. If the labyrinth lesion is chronic, the patient will tremor toward the affected side. 3. Central lesions can cause nystagmus when lesions occur in the vestibular nucleus of the human body that connect the brainstem or cerebellum, and there are many tremor characteristics caused by central neuropathy.

If it is only a brainstem lesion, it will produce unilateral tremor and will be predominantly vertical tremor, whereas demyelinating lesions will cause upward tremor. However, central nystagmus is generally not wobbly and is not prone to vertigo or hearing impairment. Fourth, genetic and other lesions Some children will have symptoms of nystagmus soon after birth, the cause of this lesion is unknown, but it is related to genetic factors, generally there are patients with congenital nystagmus in the family, then the possibility of this disease in later generations is relatively high, and often the nystagmus caused by this genetic factor is lifelong.

In addition, drug poisoning, hysteria, etc. can also cause nystagmus.

Oculogenic nystagmus.

Common ** are congenital eye malformations, ocular neuromuscular dysplasia, cataracts, total color blindness, macular lesions, etc.

Otogenic nystagmus (vestibular nystagmus).

It is commonly found in Meniere's syndrome, otitis media, labyrinthitis , acute vestibular impairment, etc.

Central nystagmus.

It can be seen in encephalitis, brain tumors, cerebrovascular diseases, traumatic brain injury, encephalopathy, ataxia, stroke or multiple sclerosis.

Other. It may be related to heredity, with X-linked recessive inheritance being the most common, which manifests as a parent with the disease, and children are at high risk of developing the disease.

Some nystagmus can be caused by drugs or toxic substances (eg, opioids, barbiturates, alcohol, lead, etc.).

Some special occupations, such as coal miners and train dispatchers, are prone to occupational nystagmus.

Some patients with abnormal thyroid function may have neurological symptoms such as nystagmus.

It may be nervousness or amblyopia.

Nystagmus may be caused by congenital dysplasia, and when nystagmus occurs, it is usually accompanied by eye abnormalities such as low vision, strabismus, and amblyopia. In addition, nystagmus may also be caused by cardiovascular and cerebrovascular diseases or tumor trauma caused by brain nerve pathway lesions, which can be caused by nystagmus.

Nystagmus is an eye movement that is not controlled by the mind and swings back and forth rhythmically, this symptom is usually caused by some diseases, and is not an independent disease, so if nystagmus occurs, it is necessary to find out which cause is caused by it, and the nystagmus can be effective after the nystagmus**, so today I will explain to you what are the causes of nystagmus:

1. If it is congenital nystagmus, most of them are due to the fact that the fixation reflex is not fully developed, and it is usually easy to have this symptom in the case of visual fatigue or monocular coverage, and at the same time, it will be accompanied by low vision, strabismus or other eye diseases, and some nystagmus can gradually increase with age, and there will be a better phenomenon.

2. Some nystagmus will appear in adulthood, and the main manifestation is the phenomenon of vision loss, as well as the fluctuation of external objects, and the symptoms of dizziness and vomiting.

3. If there is inflammation or tumor and cardiovascular and cerebrovascular diseases on the body, it will also be easier to cause brain nerve pathway lesions, which will cause nystagmus.

4. In addition, it may be due to low vision, so that there will be nystagmus caused by fixation reflex, or it may also be due to nystagmus caused by nell and vestibular lesions, if it is caused by this situation, it is necessary to go to the ophthalmology department of the hospital in time for some examinations to avoid a certain impact on the eyes.

There are several causes of nystagmus, and when nystagmus occurs, it is necessary to find out which disease is caused by it, because nystagmus is not an independent disease, but a clinical symptom, and there will be many diseases, all of which will cause nystagmus. Therefore, if you want to have an effective nystagmus, you must first find out which disease is caused by it before you can effectively treat it.

The first and the mechanism of nystagmus are complex and uncertain, which may be caused by congenital genetic factors, or may be the clinical manifestations of other ocular and otogenic diseases. Genetic factors and environmental factors are involved in the pathogenesis.

First, the main **.

1. Oculogenic nystagmus: refers to the nystagmus formed by the central vision disorder of the macula, which makes the fixation reflex difficult.

2. Vestibular nystagmus: nystagmus caused by lesions in the vestibular nucleus or its communication pathways with the cerebellum or brainstem.

3. Central nystagmus: more common in bulbar lesions, pontine lesions, midbrain lesions and cerebellar lesions.

4. Congenital essential nystagmus: a congenital disease, which is currently unknown and needs further research.

5. Others: may be related to heredity, with X-linked recessive inheritance being the most common, manifested as parents with disease, and children with high risk of disease. Some nystagmus can be caused by drugs or toxic substances.

Second, pretend to be a service and inducing factors.

1. Usually blinking, resulting in eye muscle nerve fatigue and paralysis, which can congenitally induce nystagmus.

2. Maintaining a noisy action in a hall for a long time can lead to fatigue and paralysis of eye muscle nerves, which can congenitally induce nystagmus.

3. Congenital amblyopia, the eye itself is not perfectly developed, and it is very easy to have congenital nystagmus.

Nystagmus is an involuntary, rhythmic, back-and-forth eye movement. It is often caused by diseases of the visual system, extraocular muscles, labyrinth of the inner ear, and the central nervous system.

Nystagmus is one of the most serious eye diseases, which belongs to refractory amblyopia, and is divided into horizontal tremor and vertical tremor. Nystagmus involves ophthalmology, otology, neurology and is a symptom of a disease that often occurs in people with ophthalmic diseases called oculogenic nystagmus. Such as congenital cataract, congenital corneal opacity, congenital vitreous opacity, congenital glaucoma, congenital aniridia, total color blindness, albinism.

There is also a large magnitude of nystagmus, which is common in children with strabismus, amblyopia, high farsightedness, myopia, astigmatism, and mixed astigmatism. There is also nystagmus that is not associated with an ophthalmic condition and is called non-ophthalmic nystagmus.

Nystagmus is an involuntary rhythmic oscillation, which can be divided into congenital and acquired according to the time of occurrence. Congenital nystagmus is also known as congenital nystagmus syndrome, which can be divided into afferent and efferent nystagmus according to the location of the lesion.

Perceptual nystagmus, mainly caused by impairment or loss of vision. The site of motor nystagmus, located in the efferent pathway from the frontal lobe of the brain to the extraocular muscles, such as congenital essential nystagmus. Nystagmus is divided into two types: overt and recessive, so nystagmus is mostly caused by congenital factors and is a phenomenon that exists at birth.

Cause.

1. Retinal lesions:

Nystagmus can be caused by retinal lesions, but what are the main causes of nystagmus? For example, nystagmus patients have suffered from cataracts and juvenile amblyopia, although the patient can still retain part of the vision at this time, but the eyes often cannot be fixed back and forth, and nystagmus will occur. If the nystagmus patient has been in a poor light area for a long time, this will also cause the patient's ocular vision to be impaired, which will also cause nystagmus to occur.

Cause. 2. Central lesions:

Central lesions can also cause nystagmus, because nystagmus patients can cause rotation or vertical tremor after the occurrence of central lesions, and some people call this vertical tremor an important feature of brainstem disease, and when the brain stem is compressed or antispasmodic drug poisoning can cause vertical tremor, which also causes nystagmus.

Cause. 3. Congenital factors:

Some patients with nystagmus are caused by some congenital factors, and some nystagmus patients will have this condition soon after birth, which also means that the patient will be accompanied by this nystagmus movement for a lifetime, and according to the investigation, most of the congenital nystagmus caused by this kind of nystagmus are related to genetic factors, nystagmus patients themselves will not have any conscious symptoms, but will have nystagmus when observed in the mirror.