Understanding Flashes and Floaters: What’s Normal for Your Eyes and When to Seek Care
Have you ever noticed tiny specks drifting across your field of vision, or caught a sudden burst of light out of the corner of your eye? If so, you are not alone. These visual phenomena are known as floaters and flashes.
While they are incredibly common-especially as we get older-it is important to understand what causes them and, more importantly, when they might be a sign of a more serious eye condition that requires immediate care from an eye specialist.
What Are Eye Floaters?
Eye floaters can look like small dots, circles, lines, clouds, or cobwebs drifting through your vision. Although they appear to be floating in front of your eyes, they are actually floating inside them.
The main chamber of your eye is filled with a clear, gel-like substance called the vitreous. As we age, the vitreous naturally begins to liquefy, shrink, or thicken. When this happens, tiny clumps of gel or cells can form within the vitreous. What you are actually seeing aren’t the particles themselves, but the shadows these tiny clumps cast onto your retina (the light-sensitive layer at the back of your eye).
You are most likely to notice floaters when looking at a plain, bright background, like a blank white wall or a clear blue Cincinnati sky. You may be more prone to experiencing floaters if you are nearsighted (myopic), have previously undergone cataract surgery, or have experienced inflammation inside the eye.
What Are Flashes?
Flashes occur when the vitreous gel rubs or pulls against your retina. They can look like flashing lights, lightning streaks, or even the sensation of “seeing stars.” While seeing occasional flashes is a common part of the aging process, any new or sudden onset of flashes should always be evaluated.
Flashes vs. Migraines: What’s the Difference?
Some people experience light flashes that resemble jagged lines or heat waves. These often appear in both eyes and can last 10 to 60 minutes. This is typically caused by a spasm of blood vessels in the brain, known as a migraine or an ocular migraine if it occurs without a headache.
When Are Flashes and Floaters Dangerous?
A: sudden change in your vision can indicate a serious emergency: a torn or detached retina. This is a sight-threatening emergency that requires immediate medical intervention.
Call See Well Eye Care or seek emergency care immediately if you notice:
- A sudden, major increase in the number of new floaters.
- A sudden onset of frequent flashes of light.
- A dark shadow or “curtain” coming down across your vision.
Protecting Your Vision in Cincinnati
At See Well Eye Care, your vision is our top priority. Schedule a comprehensive eye exam with us today so we can carefully examine your retina and ensure your eyes stay healthy and clear.
FAQ Section: Flashes & Floaters
What are eye floaters?
Eye floaters are tiny specks or shapes that drift across your vision, caused by tiny clumps of gel casting shadows on your retina from inside the vitreous.
What causes flashes of light in my eyes?
Flashes occur when the vitreous gel inside your eye shrinks and pulls against the retina.
Are floaters and flashes dangerous?
Most are harmless, but a sudden increase can indicate a medical emergency like a retinal hole or tear.
When should I see an eye doctor immediately?
Seek care for a sudden burst of new floaters, sudden frequent flashes, or a shadow/curtain blocking your vision, especially if you are nearsighted or have a family history of retinal disease.
Can eye floaters be treated?
Most fade or the brain learns to ignore them. Surgery is rarely recommended and only in severe cases.
Why do I see shimmering, jagged lines without a headache?
This may be an ocular migraine, caused by temporary blood vessel spasms in the brain. It is always best to get this checked; ensure you are not driving or operating machinery when they occur to ensure safety.
Who is most at risk for floaters?
Those who are nearsighted, have had cataract surgery, or have had internal eye inflammation.