Have you ever noticed tiny spots, squiggly lines, cobwebs, or thread-like shapes drifting across your vision? They may seem to move whenever you try to look directly at them, especially when you’re staring at a bright sky or a plain white wall.
These are known as eye floaters, and while they are often a normal part of aging, they can sometimes signal a more serious eye condition that requires immediate medical attention.
Here’s what you need to know about eye floaters, when they’re harmless, and when you should see an eye doctor.
What Are Eye Floaters?
Eye floaters are tiny clumps of collagen or gel-like fibers that form inside the vitreous—the clear, jelly-like substance that fills the inside of your eye.
As light enters the eye, these tiny clumps cast shadows on the retina, the light-sensitive tissue at the back of the eye. Those shadows are what you see as floating spots or strands.
Floaters can appear as:
- Small black or gray dots
- Thread-like strands
- Cobwebs
- Squiggly lines
- Transparent circles or rings
They often drift as your eyes move and seem to disappear when you try to focus on them.
Why Do Eye Floaters Develop?
The most common cause is aging.
As you get older, the vitreous gradually becomes more liquid and shrinks. During this process, tiny collagen fibers can clump together, creating the floaters you see.
Other possible causes include:
- Nearsightedness (myopia)
- Eye injuries
- Eye inflammation
- Previous eye surgery
- Bleeding inside the eye
- Diabetic eye disease
- A tear or detachment of the retina
What Should You Do If You Notice Floaters?
Stay Calm if They Develop Gradually
If you’ve had a few floaters for years and they haven’t changed much, they’re often harmless. Many people learn to ignore them over time as the brain adapts.
However, it’s still a good idea to mention them during your routine eye examinations.
Schedule an Eye Exam for New Floaters
If you suddenly notice new floaters—even if they aren’t accompanied by other symptoms—schedule a comprehensive dilated eye examination. An eye care professional can determine whether they’re part of the normal aging process or a sign of an underlying problem.
When Are Eye Floaters an Emergency?
Seek immediate medical attention if you experience:
- A sudden shower of many new floaters
- Flashes of light in one or both eyes
- A dark curtain or shadow moving across your vision
- Sudden loss of part of your vision
- Blurred vision that appears suddenly
- Floaters after an eye injury
These symptoms may indicate a retinal tear or retinal detachment, which is a medical emergency. Prompt treatment can help preserve your vision.
Can Eye Floaters Be Treated?
Most floaters don’t require treatment because they become less noticeable over time.
If floaters are severe enough to interfere with daily activities, an eye specialist may discuss treatment options such as:
- Laser vitreolysis, which uses a laser to break up certain floaters. This procedure isn’t suitable for everyone.
- Vitrectomy, a surgery that removes the vitreous gel and replaces it with a clear solution. While effective in selected cases, it carries risks such as infection, retinal detachment, and cataract formation, so it’s usually reserved for severe symptoms.
Can You Prevent Eye Floaters?
There is no guaranteed way to prevent age-related floaters. However, maintaining good overall eye health may reduce your risk of certain eye diseases.
Healthy habits include:
- Getting regular comprehensive eye exams.
- Managing diabetes and high blood pressure.
- Wearing protective eyewear during sports and hazardous activities.
- Eating a balanced diet rich in leafy greens, colorful fruits, and omega-3 fatty acids.
- Avoiding smoking.
- Seeking prompt medical care for eye injuries or sudden vision changes.
Final Thoughts
Eye floaters are common and, in many cases, are simply a normal part of aging. While they can be annoying, they often become less noticeable over time and don’t threaten your vision.
However, never ignore a sudden increase in floaters, flashes of light, or a shadow in your vision. These symptoms can be signs of a retinal tear or retinal detachment, both of which require urgent medical evaluation.
If you’re ever unsure whether your eye floaters are normal, it’s always safest to have them checked by an eye care professional. When it comes to protecting your eyesight, early evaluation can make all the difference.