Dilated pupils are a fairly common occurrence among both children and adults. It is possible that the pupils for some period may differ from each other. If there are no disturbing symptoms besides this, there is nothing to worry about.
A congenital or acquired symptom - dilated pupils in a child - does not cause problems with visual acuity. However, for greater persuasiveness, it is better to contact an ophthalmologist.
The most common causes of dilated pupils in adults are eye drops. Such changes have no negative consequences.
There are other reasons provoking dilated pupils :
- Aortic aneurysm.
- Intracranial bleeding caused by trauma.
- The development of a brain tumor.
- The difference in pressure on the eyes (one more, the other less). The reason for this, as a rule, is glaucoma.
- Membrane infection provoked by meningitis or encephalitis.
- Persistent and prolonged headaches.
- The development of a tumor of the lymph node located in the upper region of the chest.
- Taking medications (Atropine, Scopolamine, Gomatropin and Adrenaline).
- Remember that one of the main factors affecting the size of the pupils is the powerful release of adrenaline into the blood. In general, dilated pupils are an indicator of a person’s internal state. For this reason, during the operation, doctors constantly monitor the condition of the patient's pupils in order to diagnose changes in time. When the patient is given mild anesthesia, his pupils are narrowed. If the anesthesia is deep, the pupils dilate.
- Most likely, the known factor causing the “large pupils” is the use of drugs, alcoholic beverages or hallucinogenic drugs. Remember that even if a person refuses to take drugs, the pupils no longer take their former shape and forever remain dilated.
In addition to medical indicators, there are natural causes of dilated pupils. This happens when the lighting changes. In the dark, the pupil expands. If its diameter is about 3-5 mm at rest, its size increases about one and a half times as a result of a reaction to darkness or twilight. At different ages of a person, the pupil reacts differently. Young people are more adapted to the dark. In adulthood, the size of the icon decreases.
There is a disease when the expansion of the pupils is a constant and stable phenomenon. This is due to a decrease in the ability of the optic nerve to respond to light changes. As a rule, patients who have such a disease, under normal lighting, have dilated pupils. When the brightness of the light rises, the eyes may begin to hurt. There are also problems in the absence of light at all. Such patients need to be extremely careful when moving at night. They cannot see objects in full at night. This is especially dangerous for drivers.
The human body undergoes changes in connection with the influence of psychological factors. Eyes are no exception in this case. When a student, for example, experiences strong emotional stress as a result of an exam, an upcoming test or an unlearned lesson, his pupils dilate. Also, pupil dilation is observed as an adverse reaction to physical pain (sharp sharp pain).
When a person has an emotional state that is sad, sad, upset, the pupils, on the contrary, narrow. That is, emotions associated with a melancholy mood cause a decrease in their size. And their sharp surge is expansion.
In any case, if the cause of your condition is not known, it will be most appropriate to consult a specialist.