Immobility of pupils Reflex

Fixed pupils are a condition in which the pupils do not change their size in response to changes in light, but remain dilated or constricted.

The immobility of the pupils can be both physiological and pathological. Physiological pupillary immobility is observed in healthy people at rest or when performing certain exercises, such as meditation. Pathological immobility of the pupils is associated with various diseases, such as glaucoma, migraine, stroke, paralysis, brain injury, etc.

Studying pupil immobility is an important method for diagnosing diseases of the central nervous system, including glaucoma, migraine and others. In addition, pupillary immobility is used as a test for drug intoxication.

In order to determine the immobility of the pupils, a special device is used - a photoreflectometer. It allows you to measure pupil diameter within a few seconds. In this case, the doctor observes the reaction of the pupils to light and evaluates their immobility.

If the pupils are motionless, this may indicate a health problem. However, in order to accurately determine the cause of pupillary immobility, it is necessary to conduct additional research and consult a doctor.

Pupillary immobility is a reflex phenomenon in which the pupil stops changing in diameter in response to changes in illumination in the environment. The pupils are round in shape, do not react to each other, are not oriented relative to each other, the size of one pupil does not depend on the size of the other pupil. It differs from pupillary atropia in that the pupils in this condition function normally: they react to bright light by constricting and dilate again when this light source closes or leaves the field of view.

The occurrence of pupil immobility is associated with overexcitation of the neuro-reflex structures involved in accommodation-focusing of the retina on close and distant objects. These structures are located in the anterior parts of the brain stem (su