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Nystagmus is abnormal movement of the eye due to certain visual, neurological, or vestibular lesions. Nystagmus is not controlled by involuntary consciousness and has a certain rhythm. According to the different forms, frequencies and periods of tremors, they can be divided into:
Impulsive, pendulum, horizontal, vertical, rotary, congenital, acquired, etc.
To date, there is no direct or effective method for nystagmus, only some indirect methods to improve symptoms. After going to the hospital to check and confirm the type of nystagmus, it is possible to carry out the following ** measures:
1. Refractive correction: After paralyzing the ciliary muscle refraction, if there is an obvious refractive error, it is best to wear glasses for correction.
2. Triangular prism: Prism is worn by using the characteristics of congenital motor nystagmus to reduce or inhibit nystagmus when the eyes are at rest or when they are used. to eliminate compensatory cephalic position and improve vision. There can be co-rotating prisms and heterotropic prisms.
3. Surgery**: For patients with congenital nystagmus who have a compensated head position, the static eye position can be moved from the side to the side through surgery, which can improve or eliminate the compensated head position and improve vision, but it cannot be **. In addition, a prism test should be performed before surgery to determine the necessity of surgery.
Nystagmus is a relatively complex eye disease that requires a clear diagnosis of the type of tremor, and then the best measures to alleviate it, it is recommended to seek medical attention in time to improve vision and effectively improve the quality of life.
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Eye tremor, considered nystagmus, is an uncontrolled beating of the eyeball, which has congenital and acquired causes, and is divided into two conditions: explicit and recessive.
Occult nystagmus, when both eyes are uncovered, there is no tremor, and when one eye is covered, the uncovered eyes show nystagmus. Patients with nystagmus may usually be accompanied by obvious refractive errors or strabismus, and some patients have obvious compensated head position, so routine refractive examination and prism test can confirm the diagnosis. Refractive error correction or surgery can be considered by wearing triangular glasses**, and the main thing is to move the median band to the front to eliminate and improve the head area, and generally cannot reduce the nystagmus.
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1.Ocular nystagmus.
Refers to the visual impairment in the center of the macula, which is caused by difficulty in forming the fixation reflex.
1) Physiological fixation nystagmus includes oblique nystagmus, visuodynamic nystagmus and recessive nystagmus.
2) Pathological fixation nystagmus includes blind nystagmus, amblyopia nystagmus, occupational potato nystagmus, etc.
2.Vestibular nystagmus.
3.Central nystagmus.
4.Congenital idiopathic nystagmus.
Clinical presentation. Voice.
1.Run-out type.
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 **.
2.Swing type.
The swing of the eyeball is like a pendulum, there is no fast phase and no slow phase. Its velocity and amplitude are equal. It is more common in patients with dark eyes and amblyopia.
Examine. Voice.
1.General examination.
Have the patient look straight ahead and observe the nystagmus as they follow the examiner's finger in a certain direction. Some require a single eye covering for examination. To this end, the following points should be taken into account during the inspection:
1) Whether it is recessive or latent, or overt nystagmus.
2) Whether the nystagmus is joint - whether the movements of the two eyeballs are consistent with each other or dissociated.
3) The type, direction, degree, frequency, amplitude of nystagmus, etc.
4) There are endless eye positions.
2.Special examinations.
Nystagmus galvanogram and other instrument examinations.
Diagnosis. Voice.
Nystagmus is involuntary, rhythmic reciprocating movements of the eyeball, which can be diagnosed as nystagmus.
**。Voice.
1.First of all, it is necessary to target the symptoms.
2.Surgery**, for congenital idiopathic nystagmus, surgery can be performed to move the resting eye to the front to improve vision and reduce or suppress the appearance of nystagmus.
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It is an involuntary, rhythmic, back-and-forth eye movement. The direction is divided into horizontal type, vertical source straight type, rotation type, etc., with the horizontal type being common, usually the fast phase direction indicates the direction of nystagmus, and the fast phase is the compensatory recovery of the movement of the fissure. Referred to as nystagmus.
It is often caused by disorders of the visual system, extraocular hunger, inner ear, labyrinthine hands, and the central nervous system. Nystagmus.
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Nystagmus is an involuntary, rhythmic, pendulum-like or beating-like oscillation of the eyeball. The main causes of nystagmus are early eye motor dysplasia, such as congenital cataracts, which cause nystagmus, as well as family genetic history, Down syndrome, brain damage, or lesions, such as inflammation of the brain, tumors, degeneration, trauma, and vascular diseases, which may cause nystagmus.
In addition, eye disease or eye dysfunction, degenerative changes of the optic nerve, severe astigmatism, high myopia, physical diseases, multi-site sclerosis, stroke, and severe ear inflammation can cause eye tremors. Some poisonings can also cause nystagmus, such as sedative poisoning, antipsychotic poisoning, bromide poisoning, etc., alcoholism, albinism are also one of the causes of nystagmus. Sometimes nystagmus is not defined** and may also be affected by mental and physical strength, such as stress, fatigue or nervousness.
2. What are the dangers of nystagmus?
The direction of nystagmus is generally horizontal, vertical, rotary, oblique and mixed, among which horizontal is more common.
There are two main forms of nystagmus: impulsivity and oscillation. Impulsive nystagmus is birhythmic and occurs in which the eyes move in both directions at an unreasonable speed, slowly to one side, and then to the opposite direction of the fast phase. Usually the fast phase is used as the direction of nystagmus.
Oscillatory nystagmus is the movement of the eye from the midpoint to the sides, and its movement is equal in amplitude and speed, and there is no distinction between fast and slow.
1. Sense of object movement, nystagmus patients have a sense of turbulence when looking at external objects, dizziness, nausea, vomiting, and often feel that the objects that do not move are constantly moving back and forth.
2. Vision loss is regressive, due to poor macular development or confusion caused by tremor is not conducive to macular fixation, fixation reflex can not develop.
3. Central nystagmus with diplopia mostly has tremor diplopia.
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What's going on with nystagmus
1. Ophthalmic nystagmus: nystagmus caused by low vision that makes the fixation reflex difficult.
2. Vestibular nystagmus: nystagmus due to lesions of the inner ear and vestibular ear.
3. Central nystagmus: nystagmus caused by inflammation, tumor, degeneration, trauma, vascular disease causing lesions of nerve pathways in the brain.
4. Congenital idiopathic nystagmus: There are no obvious organic lesions, and the loss of visual acuity is mostly caused by the image tremor, and the tremor can be reduced in a certain field of vision, which is medically called the resting eye position.
Principles of nystagm**
1) Correction of refractive error, if accompanied by amblyopia, it should be at the same time**.
2) Active**Primary disease.
3) Optical correction: Correct the head position by wearing a suitable prism to improve vision.
4) Biofeedback**: Auditory feedback technology is used to make nystagmus movements sound, and the nystagmus is controlled by the patient's self-training.
5) Surgery**: Although surgery does not cause nystagmus, surgery can move the resting eye to the front and reduce or suppress the frequency of nystagmus.
NystagmusIt is a very serious disease of the human body, which directly affects people's living conditions. There are many causes of nystagmus, and patients need to find their real cause of the disease, and then carry out targeted ** in order to get ahead of it**. In daily life, patients should pay special attention to protecting the cleanliness of their eyes and reducing the occurrence of diseases.
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Nystagmus is called nystagmus, and nystagmus can occur in both physiological and pathological situations, such as when there is a fast-moving sight in the field of fixation, the eye will manifest as optokinetic nystagmus, which is physiological.
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Nystagmus is an involuntary, rhythmic eye movement that causes abnormal eye movements due to certain visual, neurological, or vestibular disorders. The direction is divided into horizontal, vertical, and rotational types, with the horizontal type being the most common.
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No, it's nystagmus, and the shaking of the eyes may be eye strain, or muscle spasms, not nystagmus.
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 **.
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