How many types of nystagmus are there, and how many types of nystagmus are there?

Types of nystagmus are mainly divided into fast-acting nystagmus, oscillating nystagmus, converging nystagmus, seesaw nystagmus, and vibratory visual hallucinations according to the form of nystagmus. It can also be divided into inner ear labyrinthogenic nystagmus, brainstem and cerebellar nystagmus, optokinetic nystagmus, etc.

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 **.

Horizontal type, circle type, left and right type,.

This is okay, how is the situation now.

Types of nystagmus.

1. Ophthalmic nystagmus. There are two main categories: one is physiological fixation nystagmus, which includes all nystagmus symptoms caused by physiological factors. The other is pathological fixation nystagmus, which includes all symptoms of nystagmus caused by pathological factors.

2. Vestibular nystagmus. It mainly indicates symptoms of tremor in the vestibule of the eyeball.

3. Central nystagmus. It mainly refers to the symptoms of tremor in the central system of the eye.

4. Congenital idiopathic nystagmus. It mainly refers to the fact that the patient is born with a disease with this symptom.

Clinical manifestations of nystagmus.

1. Throbbing nystagmus. It is a back-and-forth oscillation of the eyeball at different speeds, which is manifested by the slow movement of the eyeball to one side to a certain level and then the rapid jump back into place. This type of tremor is divided into two manifestations: chronic and fast-phase, with chronic being physiological and fast-paced.

The direction of the fast phase is generally the direction of nystagmus, which is related to the cause of the disease.

2. Oscillating nystagmus. Refers to the symptoms in which the eyes swing like a pendulum. There is no fast or slow phase for this type of tremor. The speed and amplitude of nystagmus are equal. It is mainly one of the symptoms of dark eyes and amblyopia disease.

Nystagmus can be divided into: 1. Perceptual deficit nystagmus, mainly due to the lack of clear imaging of the macula caused by the disease of the eye itself, resulting in dysplasia of normal reflex development, and the loss of function of the normal maintenance target and foveal locomotor system and the formation of inflammation, which is more common in congenital cataracts, corneal dystrophy, macula, optic nerve hypoplasia, and high refractive error.

People with nystagmus can affect their vision. Because the eyes move uncontrollably, the patient cannot see things fixedly. Moreover, most patients with nystagmus have very poor visual development, accompanied by varying degrees of amblyopia.

Even if it is corrected in childhood with glasses, as well as amblyopia training, it is difficult to return to normal levels. Therefore, patients with nystagmus often have low vision, and there is no way to completely correct the vision.

In patients with congenital nystagmus, surgery may be considered**. To a certain extent, it can partially improve the patient's vision, or delay the amplitude or frequency of nystagmus.

Nystagmus can be divided into:

1. Perceptual deficit nystagmus is mainly due to the unclear imaging of the macula caused by the disease of the eye itself, resulting in the development of normal fixation reflex disorders, so that the function of the micromotor system that normally maintains the target in the fovea is lost and inflammation is formed, which is more common in congenital cataracts, corneal dystrophy, macular macula, optic nerve hypoplasia, high refractive error and albinism, etc., usually bilateral horizontal nystagmus, which is oblique and fast and slow with equal speed.

2. Motor deficit nystagmus, mainly efferent mechanism defects, can involve the nerve center or the same direction of motor control without abnormal changes in the eye, this type is impulsive type with fast and slow differences, when the eyes gaze in a certain direction, the positive and negative frequencies are reduced and the inflammation disappears completely, and the increase in visual acuity often has a long head position, which is called the resting eye position.

3. Occult inflammation is characterized by no inflammation when both eyes are opened, and nystagmus can be induced after covering one eye, and the tremor is impulsive.