Hippus

Hippus: abnormal changes in pupil size

Hippus is an involuntary, rhythmic change in the size of the pupils that occurs regardless of the light entering the eyes. This phenomenon can be observed in people with various diseases of the nervous system.

A normally functioning pupil is regulated by the autonomic nervous system, which controls pupil size depending on light levels. In the dark, the pupil dilates to allow more light to enter the retina, and in bright light, the pupil contracts to protect the eyes from excess brightness.

However, with hippus, changes in pupil size occur regardless of the light level. This can occur due to various reasons, such as diseases of the nervous system, head injuries, intoxication or even stressful situations.

The described changes in pupil size can be either symmetrical or asymmetrical. In addition, they can occur both at rest and in response to various stimuli.

Hippus can be associated with various diseases of the nervous system. It can be observed in patients with myasthenia gravis, epilepsy, autonomic nervous dysfunction, stroke, brain injury and other diseases.

Diagnosis of hippus is carried out by observing changes in pupil size under different lighting conditions. Additional tests such as electroencephalography and magnetic resonance imaging may help identify the cause of hippus.

Treatment for hippus depends on its cause. If hippus is caused by a disease of the nervous system, then it is necessary to treat this disease. In some cases, medications such as antidepressants or antiepileptic drugs may be used.

In conclusion, hippus is an abnormal phenomenon that can be associated with various diseases of the nervous system. Diagnosis of hippus is made by observing changes in pupil size under different lighting conditions, and treatment depends on its cause.



Hippus: Mysterious rhythmic changes in pupil size

In the world of medicine, there are many mysterious and incomprehensible phenomena that continue to arouse surprise and curiosity among researchers. One such phenomenon is hippus (Hippus) - abnormal rhythmic changes in the size of the pupils that occur regardless of the light entering the eyes. This phenomenon is sometimes observed in various diseases of the nervous system and remains an object of interest for specialists.

Hippus was first described in 1904 by the German physiologist Hans Adolf Kühne. He observed these strange changes in pupil size in patients suffering from nervous disorders. Normally, the pupils should respond to changes in light by constricting or dilating depending on the intensity of the light. However, with hippus, the pupils do not obey this law and continue to change their size in a rhythmic manner, independent of the ambient light.

Hippus can appear in various forms and degrees of severity. In some patients, the change in pupil size occurs slowly and almost imperceptibly, while in others there is a more pronounced and rhythmic fluctuation. This may cause some discomfort and vision problems, especially when reading or working on a computer.

The causes of hippus are not completely clear. It can be associated with various nerve disorders such as epilepsy, migraines, brain injury syndromes or even depression. Some studies suggest that hippus may result from an imbalance in the neurophysiological mechanisms that regulate pupil size.

The diagnosis of hippus is made by neurologists by observing changes in pupil size and ruling out other possible causes of these changes, such as the presence of a tumor or infection. In some cases, additional neuroimaging tests such as electroencephalography (EEG) or magnetic resonance imaging (MRI) may be required.

Although hippus in itself is not a dangerous or health-threatening condition, it can be a sign of other diseases or disorders of the nervous system. Therefore, it is important to consult a specialist if abnormal changes in pupil size are detected and consult about possible causes and further treatment.

Treatment for hippus is aimed at eliminating the underlying disease or nervous system disorder that is causing these changes. In some cases, it may be necessary to use drug therapy aimed at stabilizing nervous activity and normalizing pupil size. Behavioral therapies, such as training to improve pupil size control, may also be suggested.

Despite the fact that hippus still remains a mystery to medicine, research in this area continues. Scientists are striving to understand the deeper mechanisms of this phenomenon and develop more effective diagnostic and treatment methods.

In conclusion, hippus is a rare and mysterious phenomenon characterized by abnormal rhythmic changes in pupil size, regardless of the light entering the eyes. It can be a sign of various diseases of the nervous system and requires consultation with a specialist to determine the cause and prescribe appropriate treatment. Research in this area continues, and perhaps in the future we will be able to fully uncover the mystery of hippus and find effective ways to treat it.



Hippus (“rat disease”) is a syndrome of uncontrolled contractions of the muscle tissue of the eye that develops during the day without any external causes. At the same time, the pupils narrow or become asymmetrical, after which after some time they return to their normal state, which is accompanied by a feeling