What Are Flashes and Floaters?
Flashes are brief flashes of light or lightning-like streaks that appear in your vision, often in the peripheral (side) areas. Floaters are small spots, cobwebs, or thread-like shapes that drift across your field of vision. Both are common visual phenomena that most people experience at some point.
How Are Flashes and Floaters Managed?
Many floaters are harmless and become less noticeable over time. We monitor patients closely to ensure no retinal tears or detachment develop. If a retinal tear is found, it can often be treated promptly with barrage laser therapy in our clinic to prevent detachment.
For retinal detachments or more severe cases, surgical repair may be necessary, performed by our retinal specialist at Saskatoon City Hospital.
Why Do Flashes and Floaters Happen?
Flashes and floaters usually occur due to natural changes in the eye’s vitreous—the gel-like substance filling the inside of the eye. As we age, the vitreous can shrink and pull away from the retina, causing light flashes (from retinal traction) or tiny clumps that cast shadows on the retina (floaters).
However, sudden onset or a rapid increase in flashes or floaters can be a sign of a retinal tear or detachment, which requires urgent medical attention.
How Do We Test for Flashes and Floaters?
Our comprehensive dilated eye exam allows us to thoroughly inspect the retina and vitreous for any tears, detachments, or other abnormalities. We also use Optos widefield imaging for detailed views of the peripheral retina to detect subtle changes.
When Should You Be Concerned?
You should seek prompt evaluation if you experience:
- A sudden increase in the number or size of floaters
- New flashes of light, especially if persistent
- A shadow, curtain, or loss of peripheral vision
- Blurred vision or a sudden change in vision
These symptoms may indicate a retinal tear or detachment that needs urgent treatment.