Мидриаз (Mydriasis)

Mydriasis: what is it and what are its causes

Mydriasis is a condition of pupil dilation that can occur in response to various stimuli. Typically, mydriasis occurs in dim lighting when the pupil dilates to let in more light. However, if mydriasis occurs in bright light, it may be a sign of more serious vision problems.

Under normal conditions, the pupil is regulated by the muscles of the iris, which control its size. If the muscles of the iris are relaxed, the pupil dilates, and if they contract, the pupil contracts. However, various factors can affect the function of these muscles and cause mydriasis.

One of the most common causes of mydriasis is drug therapy. Some medications, such as epinephrine, atropine, and cocaine, can cause pupil dilation. Mydriasis can also be caused by eye injury, inflammatory processes or neurological diseases.

Symptoms of mydriasis can vary depending on the cause. If mydriasis is caused by drug therapy, pupil dilation may be accompanied by other symptoms such as dry mouth, irregular heart rhythms and high blood pressure. If mydriasis is caused by an eye injury,

**Mydria (mydriasis)**

**Mydraza** (from the Greek mydria - “stretching, dilation”) is a condition in which the pupils dilate and become huge. In medical practice, the word “mydriasis” means not only the effect of pupil dilation itself, but also any conditions in which their reaction to light slows down. It often develops against the background of miosis - a sharp contraction of the muscles of the eyeball. In healthy people, dilated pupils increase the sensitivity of the fundus and expand its field of vision. Myopia and miotics In myopics with low myopia, the reverse pathology is visible: mydria, as opposed to mios. This phenomenon is due to the fact that a person practically cannot see into the distance, therefore his eyes, trying to preserve a more complete picture of what is happening around him, must “guess” the outlines of objects by indirect signs, and objects near are more contrasting so that they are easier to detect. So small