Eye floaters look like small dark shapes drifting across your vision. They can appear as black or gray specks, tiny dots, squiggly lines, thread-like strings, or cobweb-like patterns. Some are transparent and knobby, others are sharply defined dark spots. What they all have in common is that they seem to float in front of whatever you’re looking at, moving when your eyes move and drifting slightly when your eyes stop.
Common Shapes and Sizes
Most floaters fall into a few recognizable categories. The simplest are small dark dots or specks, sometimes just one or two, sometimes a scattered cluster. These are the most common type and often so small they only catch your attention in certain lighting.
Stringy floaters look like thin threads or fibers, sometimes with small knobs along their length, like a strand of tiny beads. These can appear transparent or semi-transparent and tend to be longer and more noticeable than dot-shaped floaters. Cobweb floaters are similar but branch out in multiple directions, creating a web-like pattern that can briefly smear across your field of view.
One specific type, called a Weiss ring, is larger and distinctly ring-shaped. It forms when the gel inside your eye separates from the retina at the back of the eye. Because it’s bigger than typical floaters, a Weiss ring tends to be more noticeable and can temporarily interfere with reading or driving.
How They Move
Floaters don’t stay fixed in one spot. They drift and swirl with your eye movements, but with a slight delay. If you shift your gaze to the left, the floater follows a fraction of a second later. When your eyes stop, the floater keeps drifting for a moment before settling. This lag is what gives them their characteristic “floating” quality. If you try to look directly at a floater, it typically slides away because it moves with your eye.
This movement pattern is useful for identifying floaters. A smudge on your glasses or a scratch on your cornea stays in a fixed position relative to your gaze. Floaters never hold still.
When They’re Most Visible
Floaters stand out most against bright, uniform backgrounds. A clear blue sky, a white wall, a blank computer screen, or a well-lit page of a book can all make floaters suddenly obvious. In dim lighting or against complex, patterned backgrounds, the same floaters may be virtually invisible. This is why many people first notice their floaters while reading outdoors or staring at a screen.
The reason is simple: floaters are shadows. When bright, even light enters your eye, the clumps inside cast sharper, more defined shadows on your retina. In low or uneven light, those shadows get washed out by the visual noise around them.
What Creates Them Inside Your Eye
Your eye is filled with a clear, gel-like substance that sits between the lens at the front and the retina at the back. This gel contains microscopic collagen fibers that are normally spread evenly and invisibly throughout. Over time, protective molecules on the surface of these fibers break down, exposing the collagen underneath. When two exposed fibers touch, they fuse together into clumps. These clumps are dense enough to cast tiny shadows on your retina, and those shadows are what you see as floaters.
Eye movements actually contribute to this process by bringing collagen fibers into contact with each other, which helps explain why floaters tend to accumulate gradually over months and years. As more fibers clump together, the gel also becomes patchier, with some areas becoming more liquid. This is a normal part of aging, though it can happen earlier in people who are nearsighted.
How Common They Are
Floaters are extremely common across all ages. Research using large community surveys has found that floater prevalence isn’t significantly affected by age, race, gender, or eye color. In other words, nearly anyone can develop them. That said, the floaters that become bothersome enough to affect daily activities tend to show up more often in people over 50, when the gel inside the eye undergoes more significant structural changes.
Floaters vs. Other Moving Spots
Not every drifting speck in your vision is a floater. If you’ve ever stared at a bright blue sky and noticed tiny bright dots darting rapidly along fixed paths, that’s a different phenomenon entirely. Those are white blood cells moving through the tiny blood vessels in front of your retina. They appear as small, fast-moving points of light that follow consistent trajectories and disappear within a second or two. Floaters, by contrast, are darker, slower, and drift more randomly. The bright-dot phenomenon is completely normal and not related to vitreous changes.
When Floaters Signal Something Serious
A few floaters that appear gradually and stay consistent are not dangerous. The situation changes when floaters appear suddenly and in large numbers. A sudden shower of new floaters, especially tiny specks or squiggly lines that seem to come out of nowhere, can signal that the retina at the back of your eye is tearing or detaching. Other warning signs that can accompany this include flashes of light in one or both eyes, blurred vision, worsening peripheral vision, or a shadow that looks like a curtain creeping across your field of view.
Retinal detachment is an emergency that can cause permanent vision loss if untreated. The key distinction is timing and quantity: one or two new floaters that show up over weeks are typical. A burst of many new floaters in minutes or hours, paired with flashes or vision changes, warrants immediate care.
Treatment Options for Bothersome Floaters
Most floaters don’t require treatment. Your brain adapts to them over time, and many people find that floaters they initially noticed constantly become much less apparent after a few months. For floaters that genuinely interfere with vision, such as reading, driving, or working at a computer, treatment is available. In a study of 651 patients with floaters significant enough to degrade their vision, about 56% were managed with observation alone, while 44% elected a surgical procedure to remove or reduce the floaters. Those who opted for observation tended to be younger and had less dense floater material in their eyes.
The surgical option involves removing some of the gel from inside the eye and replacing it with a clear solution. It’s effective but carries risks, so it’s typically reserved for people whose floaters substantially affect their quality of life. Laser treatment is another option for certain types of floaters, though it works best on large, isolated clumps rather than scattered, diffuse ones.