The phenomenon you are describing, where you see little white squiggles of light crossing your field of vision, is known as floaters. Floaters are actually tiny clumps of gel or cells that float inside the vitreous humor, the clear, jelly-like substance that fills the center of the eye. They cast shadows on the retina, which is what you perceive as the squiggles of light.
Floaters are quite common and are usually harmless. They can appear as various shapes, such as dots, specks, strands, or cobwebs, and may be more noticeable when looking at a bright background, such as a clear sky or a white wall. Floaters can move around as your eyes move and tend to settle down and become less noticeable over time.
While most floaters are a normal part of the aging process and do not require treatment, there are certain cases where floaters may indicate an underlying eye condition. If you suddenly experience a significant increase in floaters, see a shower of floaters, or notice flashes of light accompanying the floaters, it is important to consult an eye care professional promptly. These symptoms could be signs of a retinal tear or detachment, which requires immediate medical attention.
In summary, seeing little white squiggles of light (floaters) in your field of vision is a common occurrence and is usually not a cause for concern. However, if you experience a sudden change in floaters or flashes of light, it is recommended to seek professional evaluation to rule out any potential eye issues.