Eye Floaters
Eye floaters are common visual disturbances that can appear as spots, lines, or cobweb-like shapes in your vision. While many floaters are harmless, sudden changes can sometimes signal a serious retinal problem. At Cali Eye Institute, we provide comprehensive eye examinations to evaluate new or concerning floaters and help protect your vision.
Serving patients throughout Torrance, Lancaster, Ventura, and surrounding Southern California communities.
What Are Eye Floaters?
Eye floaters are small spots, specks, lines, cobwebs, or shadow-like shapes that appear to move across your field of vision. They may seem as though they are on the surface of your eye, but they are actually caused by changes inside the eye, specifically within the vitreous. The vitreous is a clear, gel-like substance that fills the space between the lens and the retina.
As you move your eyes, floaters often move with them and may drift away when you try to look directly at them. They can appear more noticeable when looking at bright backgrounds, such as a clear sky, white wall, or computer screen. With age, the vitreous naturally changes and may become more liquid, causing small strands or clumps to form.
When light enters the eye, these tiny structures can cast shadows onto the retina, the light-sensitive tissue at the back of the eye. Your brain interprets these shadows as floaters. In many cases, occasional floaters are harmless and do not require treatment, particularly when they have been present for a long time without changing.
However, a sudden increase in floaters should not be ignored, especially when accompanied by flashes of light, blurred vision, or a dark curtain or shadow moving across your field of vision. These symptoms may indicate a retinal tear or retinal detachment, which can threaten vision and requires prompt evaluation.
Understanding what causes eye floaters and recognizing changes in their appearance can help you know when routine monitoring is appropriate and when immediate eye care may be necessary.
Eye Floaters Symptoms
Eye floater symptoms can vary from person to person and may become more noticeable when looking at bright backgrounds. Most are harmless, but sudden changes in floaters should be evaluated promptly.
Moving Spots
Small dark or gray spots may appear to drift across your field of vision, especially when looking at bright surfaces.
Thread-Like Lines
Some people notice thin lines or strands that seem to float across their vision and move when the eyes move.
Cobweb Shapes
Floaters may appear as web-like or tangled shapes that seem to drift in front of the eye.
Dark Shadows
Small shadows or cloudy areas may appear in your vision due to changes within the vitreous gel.
Moving With Your Eyes
Floaters often shift position as you move your eyes and may seem to move away when you try to look directly at them.
Bright Backgrounds
Floaters are often easier to notice when looking at a clear sky, white wall, computer screen, or other bright background.
Flashes of Light
Brief flashes or streaks of light may occur when the vitreous pulls on the retina and should be evaluated if they are new.
Sudden Increase
A sudden increase in floaters, particularly when combined with flashes or a dark curtain, may indicate a retinal tear or detachment and requires prompt medical attention.
Because new or sudden eye floaters can sometimes indicate a retinal problem, prompt evaluation is important. The specialists at Cali Eye Institute, Lancaster Eye Institute, and Anacapa Vision use advanced eye examinations and retinal imaging to identify potential causes and help protect your vision.
What Causes Eye Floaters?
Most eye floaters are caused by natural changes that occur in the vitreous, the clear, gel-like substance that fills the inside of the eye. As we age, the vitreous gradually becomes more liquid and can shrink or separate from the retina. This process may cause small strands, clumps, or particles to form within the gel, creating shadows that appear as floaters in your vision.
Common causes of eye floaters include:
- Age-Related Vitreous Changes – Natural changes in the vitreous become more common with age and are a frequent cause of floaters.
- Posterior Vitreous Detachment (PVD) – The vitreous may pull away from the retina, often causing a sudden increase in floaters or flashes of light.
- Eye Injury or Trauma – An injury to the eye can cause changes or bleeding within the vitreous, resulting in new floaters.
- Eye Inflammation – Inflammation inside the eye can release cells or debris into the vitreous and create floating spots.
- Vitreous Hemorrhage – Bleeding from damaged blood vessels can cause numerous dark spots, clouds, or shadows in the field of vision.
- Retinal Tears – A tear in the retina can allow cells or pigment to enter the vitreous and may cause a sudden appearance of floaters.
- Retinal Detachment – A detached retina may cause new floaters along with flashes, blurred vision, or a curtain-like shadow and requires urgent medical attention.
- Other Retinal Conditions – Certain diseases affecting the retina or blood vessels can also contribute to the development of floaters.
- Previous Eye Surgery – Some eye procedures can lead to changes within the vitreous that may result in new or more noticeable floaters.
While most floaters are harmless, new, sudden, or rapidly increasing floaters should always be evaluated by an eye care professional, particularly when accompanied by flashes of light, a dark curtain, or a sudden loss of vision. Prompt evaluation can help identify serious retinal problems before permanent vision loss occurs.
Eye Floaters Risk Factors
Certain factors can make eye floaters more likely to develop or increase the risk of changes within the vitreous and retina. Understanding these factors can help you recognize when regular eye examinations may be especially important.
Increasing Age
Age-related changes in the vitreous are one of the most common reasons people develop new or more noticeable floaters.
Nearsightedness
People with significant myopia may have a higher risk of vitreous changes and retinal problems that can contribute to floaters.
Previous Eye Surgery
Cataract surgery and other eye procedures can sometimes lead to changes within the vitreous and the appearance of new floaters.
Eye Injury
Trauma to the eye can affect the vitreous or retina and may result in new floaters, flashes, or other visual changes.
Eye Inflammation
Inflammation inside the eye can cause cells and other material to enter the vitreous, making floaters more noticeable.
Diabetes
Diabetes can affect the retinal blood vessels and increase the risk of bleeding or other retinal changes that may cause floaters.
Previous Retinal Problems
A history of retinal tears, retinal detachment, or other retinal conditions can increase the risk of future vitreous and retinal changes.
Family History
Having a personal or family history of retinal detachment may increase the risk of certain retinal problems and makes regular eye monitoring particularly important.
Glaucoma by the Numbers
Millions of Americans are living with glaucoma, and many are unaware they have the condition because symptoms often do not appear until vision loss has already occurred. Glaucoma is one of the leading causes of irreversible blindness, making early detection critical.
Routine eye exams allow ophthalmologists to identify glaucoma before noticeable vision changes develop, helping preserve sight and prevent further optic nerve damage.
If you have a family history of glaucoma or have not had a comprehensive eye exam recently, schedule an evaluation at Cali Eye Institute in Torrance, Lancaster Eye Institute in Lancaster, or Anacapa Vision in Ventura.
Diagnosis of Eye Floaters
Diagnosing the cause of floaters requires a detailed examination of the retina and vitreous. Your ophthalmologist will use special eye drops to enlarge your pupils and carefully examine the retina, optic nerve, and vitreous.
Retinal Examination
The retina is examined for signs of retinal tears, retinal detachment, bleeding, or other abnormalities that may be responsible for new floaters.
Slit-Lamp Examination
A slit lamp provides a magnified view of the structures at the front and inside of the eye and can help evaluate changes in the vitreous.
Retinal Imaging
Measures peripheral vision and detects areas of vision loss. This test helps determine how glaucoma is affecting your sight.
Ocular Ultrasound
If the view of the retina is limited by bleeding, a dense cataract, or other factors, an ultrasound may help evaluate the structures.
Potential Complications of Eye Floaters
Most eye floaters are harmless and do not cause permanent problems. Over time, the brain may adapt to them, making them less noticeable. However, new or sudden floaters can sometimes be a warning sign of an underlying retinal or eye condition that requires prompt treatment.
Retinal Tear
A sudden increase in floaters may occur when the vitreous pulls on the retina strongly enough to create a small tear. Retinal tears can sometimes lead to retinal detachment if they are not identified and treated promptly.
Retinal Detachment
A retinal detachment occurs when the retina separates from the tissue beneath it. New floaters, flashes of light, or a dark curtain or shadow across your vision can be warning signs and require immediate eye care.
Vitreous Hemorrhage
Blood vessels inside the eye can sometimes bleed into the vitreous, causing a sudden appearance of numerous dark floaters, spots, or cloudy vision. This can occur with conditions such as diabetic retinopathy or after retinal damage.
Eye Inflammation
Inflammation inside the eye can cause inflammatory cells and other material to collect within the vitreous. This may result in new floaters along with redness, light sensitivity, pain, or blurred vision.
Vision Loss
If floaters are caused by a serious retinal condition and treatment is delayed, permanent vision loss can occur. Early evaluation allows potentially serious problems to be detected and treated before significant damage develops.
Because some causes of sudden floaters can threaten vision, seek prompt evaluation if you experience a sudden increase in floaters, flashes of light, a curtain-like shadow, or any sudden change in your vision.
Treatment Options for Glaucoma
The goal of glaucoma treatment is to lower eye pressure and slow or prevent further optic nerve damage.
Observation
Most eye floaters are harmless and do not require treatment. Monitoring may be recommended when floaters are stable and do not significantly affect vision.
Laser Vitreolysis (YAG)
YAG laser vitreolysis uses focused laser energy to reduce the appearance of selected bothersome floaters. It may be an option for patients whose floaters interfere with daily activities.
Vitrectomy
Vitrectomy removes the vitreous gel containing persistent, significant floaters. This surgical option may be considered when floaters substantially affect vision and other approaches are not appropriate.
Office Information
Cali Eye Institute, Torrance, CA
19000 Hawthorne Blvd, Suite 100
Torrance, CA 90503
Tel: 310-909-8880
Office Hours
Monday-Thursday: 8:30am-5:00pm
Friday: 8:30am-4:30pm
Lancaster Eye Institute, Lancaster, CA
1739 W Avenue J
Lancaster, CA 93534
Tel: (661) 940-0555
Office Hours
Monday - Thursday: 8:30am-5:00pm
Friday: 8:30am-4:30pm
Anacapa Vision, Ventura, CA
1280 S. Victoria Ave., Ste. 160
Ventura, CA 93003-6504
Tel: (805) 658-3937
Office Hours
Mondays and Fridays: 8am-3pm
Tuesdays - Thursday: 8am-4pm
Frequently Asked Questions
What are eye floaters?
Eye floaters are spots, lines, dots, or cobweb-like shapes that appear to move through your field of vision. They are usually caused by changes in the vitreous gel inside the eye.
What do floaters look like?
Floaters can look like black or gray dots, squiggly lines, threads, cobwebs, rings, or shadows. They often move when you move your eyes.
What causes eye floaters?
Most floaters are caused by age-related changes in the vitreous. Other causes include posterior vitreous detachment, eye injury, inflammation, bleeding, retinal tears, and retinal detachment.
Are floaters in the eye dangerous?
Most floaters are harmless, particularly when they have been present for a long time without changing. However, a sudden increase in floaters can be a warning sign of a retinal tear or retinal detachment.
Can eye floaters go away?
Some floaters become less noticeable over time as the brain adapts to them. Certain floaters may remain permanently but may not interfere significantly with vision.
When should I worry about eye floaters?
You should seek prompt eye care if you suddenly develop many new floaters, flashes of light, a dark curtain or shadow, missing peripheral vision, or sudden vision loss.
How are floaters in the eye diagnosed?
A dilated eye examination is usually performed to examine the retina and vitreous. Additional retinal imaging or ultrasound may be recommended when necessary.
Can I prevent eye floaters?
Age-related floaters cannot always be prevented. Protecting your eyes from injury, managing underlying health conditions, and receiving regular eye examinations can help protect overall eye health.
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