Changes in vision, such as flashes of light or floaters, can be unsettling. While these symptoms are often benign, they can also indicate serious eye conditions that require immediate attention.

What Are Eye Floaters?

Eye floaters appear as small shapes, spots, or strands that drift across your vision. They are caused by changes in the vitreous—the gel-like substance in the eye—as it shrinks and clumps with age. Floaters are common, especially in people over 50, and are typically harmless. However, a sudden increase in floaters can signal a more serious issue.

Why Am I Seeing Flashes of Light?

Flashes of light, or photopsia, occur when the retina is stimulated mechanically or electrically. This can happen when the vitreous tugs on the retina or due to other underlying conditions. Flashes often resemble brief bursts or streaks of light and may appear in your peripheral vision.

Causes of Flashing Lights in Eyes

Common causes of flashing lights include:

1. Posterior Vitreous Detachment (PVD): A natural age-related process where the vitreous separates from the retina.
2. Retinal Tear or Detachment: A serious condition where the retina peels away from its supportive layers.
3. Migraines with Aura: Visual disturbances like flashing lights may occur before a headache.
4. Eye Trauma: Injuries can trigger flashes by disturbing the retina.
5. Other Causes: Inflammation, optic nerve disorders, or other retinal conditions.

When to See an Eye Doctor about Eye Floaters & Flashes

You should seek immediate medical attention if you experience:

• A sudden increase in floaters or flashes of light.
• A shadow or “curtain” across your vision.
• Blurry or distorted vision.
• Persistent flashes in your peripheral vision.

These symptoms could indicate retinal detachment or another emergency that requires prompt treatment to preserve vision.

Flashing Lights vs. Eye Floaters

Though often experienced together, flashing lights and floaters arise from different causes:

• Floaters: Debris in the vitreous casting shadows on the retina.
• Flashing Lights: Mechanical stimulation of the retina, often from traction or other disruptions.

Treatment Options

For Floaters: Most floaters are harmless and require no treatment. In severe cases, procedures like laser vitreolysis or vitrectomy may help.

For Flashes: Treatment depends on the cause. Retinal tears or detachments often require surgery, such as laser photocoagulation or cryotherapy, to prevent further damage.

At SightMD, we offer advanced diagnostics and expert care for eye emergencies like flashes and floaters. If you experience sudden vision changes, don’t wait—contact us for immediate assistance. Protecting your vision is our priority

Sources: Duke Health, UM Kellogg Eye Center, Healthline, Johns Hopkins Medicine【8】【9】【10】