If you’ve ever noticed tiny specks, threads, or cobweb-like shapes drifting across your field of vision—especially against a bright background—you’ve likely encountered eye floaters. Though they can be distracting, they’re generally harmless and a normal part of aging. Still, understanding what causes them and when to seek medical advice can help protect your eyesight.

Floaters appear when the gel-like substance inside your eye, known as the vitreous humor, starts to shrink and liquefy over time. As this happens, tiny fibers within the gel clump together, casting small shadows on the retina. These shadows move as your eyes move, making the floaters seem like they drift or follow your gaze. While they often fade with time, certain factors—like inflammation, previous eye surgery, or bleeding inside the eye—can make them more noticeable.

In most cases, floaters don’t require treatment, but there are times when they can signal a more serious condition. A sudden increase in floaters, flashes of light, or a dark curtain across part of your vision may indicate a retinal tear or detachment, which needs immediate medical attention. Eye specialists can diagnose the cause through a dilated eye exam, ultrasound, or advanced imaging such as OCT scans.

Maintaining healthy eyes means being proactive. Schedule regular check-ups, wear protective eyewear when needed, and manage health conditions like diabetes or high blood pressure that can affect vision. Floaters are typically harmless, but if you notice sudden changes, it’s always safest to consult an eye doctor right away.