Everyone has experienced more than once a feeling called the appearance of "flies" in the eyes. Sometimes it can seem like evidence of some sinister eye disease. But still, in most cases, "flies" in the eyes appear for completely harmless reasons and are not a sign of pathology. However, it also happens when black "flies" before the eyes mean that peripheral vision has been impaired. And this is already a problem…
What are these strange signs formed by? Black "flies" in the eyes, small spots or dots appear when a person looks at a fuzzy background, such as a blue sky or a solid color wall. It is in this situation that the smallest objects become visible, which, when a person’s head is turned or the eyes move, move by inertia in the same direction, after which they smoothly fall down and settle.
Uperfectly he althy people "flies" in the eyes may appear after a long sleep or being in the dark - when the eyes get used to changing the brightness of the lighting. However, there are a number of cases where this sign indicates he alth problems that can lead to serious complications.
This includes osteochondrosis of the cervical spine, which is the most common cause of "flies". This is due to the fact that with this disease, the blood flow in the vertebral arteries is disturbed, the pressure in them decreases. These blood vessels are known to supply blood and oxygen to the brain.
"Flies" in the eyes can also appear in more dangerous acute pathologies, such as internal bleeding. In this case, white dots appear before the eyes, which can often be the only manifestation of such a dangerous syndrome. Anemia can also be the cause, due to which the level of oxygen entering the brain decreases. Because of it, metabolism is also disturbed, including in the retina. Anemia also leads to the appearance of white dots before the eyes and blurred vision. Such "fads" also appear with a critical decrease in blood pressure, when the blood supply to the vessels is insufficient. White dots also appear with traumatic brain injuries.
In the case of acute poisoning, toxic substances can affect the nervous system, including such part of it as the optic nerve. This pathology can lead not only to the appearance of "flies", butand other visual disorders such as double vision.
In the case of decompensated diabetes mellitus, there is a deep damage to the vessels of the retina and brain, which also leads to the appearance of "flies". A hypertensive crisis often results in similar vascular damage due to excessive stress. In this case, the exchange between the bloodstream and tissues weakens. At the same time, the retina of the eye is one of the most sensitive tissues to this kind of circulatory disorders.
If the "flies" in the eyes appear in the second half of pregnancy. then this may indicate the presence of a disease such as eclampsia, which is dangerous for both the mother and the fetus.
