Nystagmus - causes, treatment
Nystagmus is uncontrolled, rhythmic eye movements that can be horizontal, vertical, or rotational. This phenomenon can be congenital or acquired and is often associated with vision or balance problems.
Types of nystagmus
Nystagmus can be a symptom of various neurological, genetic, or other eye conditions . There are several types of nystagmus, each with specific characteristics:
1. Nystagmus depending on the direction of eye movement:
- horizontal — the eyes move from side to side. This is the most common form of nystagmus.
- vertical — eye movements occur vertically, up or down.
- rotational - the eyeballs rotate around an axis, giving the impression of spinning.
- torsional — characterized by torsional eye movements, where the upper part of the eyeball turns inwards or outwards.
- mixed — occurs when eye movements combine different axes, for example horizontal and vertical.
- Congenital nystagmus
It usually begins in infancy. The causes may be genetic or related to abnormalities in the development of the visual system.
- Acquired nystagmus
It can appear at any time in life and is usually the result of a specific neurological disease or brain injury.
- Spasmodic (pathological) nystagmus
It is caused by neurological disorders and can occur as a result of various conditions such as multiple sclerosis, brain tumor, stroke or head injuries.
- Flashlight nystagmus
This type of nystagmus occurs when a person looks in extreme directions and is often associated with brainstem dysfunction.
Causes of nystagmus
The causes of nystagmus can vary. In the case of congenital nystagmus, the cause is not always known. Acquired nystagmus can be caused by neurological disorders, head injuries, inner ear disorders, or certain medications or toxins. Childhood visual impairments, such as cataracts or retinal abnormalities, can also lead to the development of nystagmus.
Symptoms associated with nystagmus
In addition to uncontrolled eye movements, patients with nystagmus may experience vision problems such as reduced visual acuity, difficulty with depth perception, and dizziness. In some cases, nystagmus may also be associated with neurological problems or balance difficulties.
How to treat nystagmus?
Diagnosing nystagmus involves an ophthalmological examination of the patient, and often also neurological and audiological tests, and brain imaging, such as MRI. Treatment depends on the cause and may include corrective glasses, vision therapy, and in some cases, treatment of the underlying neurological or ear condition.
Nystagmus in children is often diagnosed in infancy and may require specialist evaluation and intervention to ensure adequate visual development and overall quality of life.
In some situations, surgical interventions may also be used.
When to consult a doctor?
Consultation with a doctor is recommended if uncontrolled eye movements occur, especially if they are new or accompanied by other disturbances such as vision problems, dizziness, balance difficulties, or behavioral changes. In the case of nystagmus in children, early diagnosis and intervention are important to minimize the impact on visual development.
