Many of us have encountered a situation when, when we close our eyes, strange patterns appear before our eyes.
These optical illusions can appear as simple spots or take on much more complex forms.
In most cases, this is completely normal, but it is important to understand in what situations it may signal more serious health problems.

If these patterns appear on a regular basis, become more vivid, and do not disappear after a few minutes, this may be a cause for concern. Here are some conditions that can cause these visual effects:
Eye strain
If you work on a computer for a long time or like to read in bed in poor lighting, you are unknowingly overloading your eye muscles and retina. As a result, you may see blurry or strange patterns before your eyes.
Lack of sleep and stress
Chronic fatigue and lack of sleep can lead to spasms of the blood vessels in the retina. This can also affect vision, disrupting its clarity and causing various visual illusions.
Migraines and vascular disorders
Migraines are sometimes accompanied by what is called an aura, which appears as bright patterns or spots before the eyes. These symptoms may be accompanied by headaches and other unpleasant sensations, including nausea.
Problems with blood pressure
Circulatory disturbances, especially those associated with high or low blood pressure, can cause temporary disturbances in perception. In such cases, various patterns or even flashes of light may appear.
If you often experience such symptoms, or if they are accompanied by headaches, deterioration of vision or general well-being, do not delay a visit to a specialist.
A timely visit to a doctor will help prevent possible complications and identify serious diseases at an early stage.