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Are Those Squiggly Lines in Your Vision Dangerous?

December 23, 2025

Have you ever noticed little specks, cobwebs, or squiggly lines drifting across your vision? These are called eye floaters, and they are incredibly common. For most people, they are a normal and harmless part of aging. However, in some cases, they can be a warning sign of a serious eye problem that needs immediate medical attention.

At DC Retina, our goal is to help you understand your eye health. Our team of nationally-recognized retina specialist is dedicated to providing clear answers and expert care to patients in Silver Spring, Bethesda, Rockville, and across the Washington Metro Area.

What Causes Floaters in Your Vision?

Your eye is filled with a clear, gel-like substance called the vitreous (vit-ree-us). When you’re young, this gel is firm. As you age, the vitreous slowly shrinks and becomes more liquid, creating tiny clumps or strands. What you see as a “floater” is actually the shadow these clumps cast on your retina, the light-sensitive tissue at the back of your eye.

This aging process, known as a posterior vitreous detachment (PVD), is the most common cause of floaters. While a PVD is usually not dangerous, the vitreous gel can sometimes pull on the retina as it separates.

Warning Signs: When Floaters Are an Emergency

You should not worry about one or two long-standing floaters that haven’t changed. However, you should see a retina specialist immediately if you experience any of the following symptoms:

  • A sudden increase in floaters, sometimes described as a “shower” or “storm” of new specks.
  • Flashes of light in your vision, which can look like lightning streaks or a camera flash.
  • A dark shadow or “curtain” appearing in your peripheral (side) vision.
  • Any sudden decrease or blurriness in your vision.

These symptoms can mean that the shrinking vitreous has torn or detached your retina. A retinal tear or detachment is a medical emergency that can lead to permanent vision loss if not treated quickly.

How We Diagnose and Treat the Cause of Floaters

If you experience any of the warning signs above, it’s crucial to have a comprehensive dilated eye exam. At our Silver Spring clinic, our fellowship-trained retina specialist, Joshua Fernandes, uses cutting-edge diagnostic technology to get a complete view of your eye health.

Using tools like Ultra-wide Field Retinal Imaging and Optical Coherence Tomography (OCT), we can thoroughly examine the vitreous and retina to determine the cause of your symptoms.

If a retinal tear is found, we can often perform an in-office procedure, such as a retinal laser, to seal the tear and prevent a detachment.

If a retinal detachment has already occurred, our expert surgeons can perform procedures like a vitrectomy or scleral buckle to repair the retina and save your sight.

Don’t Wait, Protect Your Vision

While most floaters are harmless, you should never ignore sudden changes in your vision. Trust your instincts. If something feels wrong, it’s always best to get it checked by a specialist.

The expert team at DC Retina is here to provide the urgent, compassionate care you need. We accept Medicare and most major insurance plans. Our Silver Spring office offers free parking and is easily accessible from the Forest Glen Metro stop and the Capital Beltway.

If you are experiencing a sudden onset of floaters, flashes, or a shadow in your vision, contact us immediately.

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