Key takeaway
New flashes, a sudden shower of floaters or a curtain-like shadow should be assessed promptly.
What are flashes and floaters?
Floaters may look like dots, threads, cobwebs or small shadows drifting across your vision. Flashes can appear as sparks, streaks or arcs of light.
Many are harmless, but a sudden change can sometimes mean the retina is being pulled or has developed a tear.
Symptoms that need urgent attention
Contact an eye-care professional promptly if symptoms are new, sudden or noticeably increasing.
- A sudden shower of new floaters
- Repeated flashes of light
- A dark curtain, veil or shadow
- Missing or blurred side vision
What happens during an assessment?
Dilating drops allow the retina to be examined carefully. Retinal imaging may also be recommended.
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Clinical note
This information is general and cannot diagnose your condition. Seek prompt professional advice for new or worsening symptoms.