what causes black floaters in eyes

Summary

Eye floaters are caused by age-related changes in the vitreous, the jelly-like substance inside the eyes, which liquifies and contracts. This causes scattered clumps of collagen fibers to form, which cast shadows on the retina and are seen as floaters. Floaters can also be caused by the natural shrinking of the vitreous as you age, which can cause both floaters and flashes of light. 1 2 3

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Summary Floaters usually happen because of normal changes in your eyes. As you age, tiny strands of your vitreous (the gel-like fluid that fills your eye) stick together and cast shadows on your retina (the light-sensitive layer of tissue at the back of the eye). Those shadows appear as floaters.
Floaters | National Eye Institute - National Institutes of Health
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nih.gov

Summary Eye floaters are tiny specks or strings that float into the field of vision, usually caused by age-related changes to the eye. They are usually harmless, but can impair vision if the underlying condition worsens, and can be treated by rolling the eyes from side to side and up and down to move the debris. If the floaters become too bothersome or numerous, a doctor may recommend medical attention.
Eye Floaters: Causes, Treatments, and Prevention - Healthline
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Summary Eye floaters and flashes are both caused by the natural shrinking of the gel-like fluid in your eye (vitreous) that happens as you age. Floaters appear in your field of vision as small shapes, while flashes can look like lightning or camera flashes. Floaters are very common and typically don’t require treatment.
Eye Floaters & Flashes: What They Are, Causes & Treatment
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clevelandclinic.org

Summary Eye floaters are caused by irregularly shaped clumps of collagen that float around in the liquefied vitreous body, and can affect light passing through the eye.
Eye Floaters: Treatment and Causes - All About Vision
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allaboutvision.com

Summary Most eye floaters are caused by age-related changes that occur as the jelly-like substance (vitreous) inside your eyes liquifies and contracts. Scattered clumps of collagen fibers form within the vitreous and can cast tiny shadows on your retina. The shadows you see are called floaters.
Eye floaters - Symptoms and causes - Mayo Clinic
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It’s rare, but floaters can also result from: Eye disease Eye injury Diabetic retinopathy Crystal-like deposits that form in the vitreous Eye tumors Serious eye disorders associated with...
Eye Floaters: Causes, Symptoms, and Treatment - WebMD
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Eye floaters are common and usually no cause for alarm. However, they may be a symptom of a developing eye condition or an underlying health issue. Common conditions that may…
How to Get Rid of Eye Floaters: 3 Different Ways - Healthline
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