The short explanation
Please do not wait until Monday. A sudden shower of new floaters together with flashes of light in one eye can be a sign that the jelly inside the eye is pulling on the retina, the light-sensitive layer at the back of the eye. Sometimes this causes a tear or a retinal detachment, which needs urgent treatment to protect your sight. Short-sighted people, those over fifty, and people who have had cataract surgery or an eye injury are at higher risk. Many people with these symptoms turn out to have a harmless change in the jelly, but only a dilated eye examination can tell the difference. Treating a retinal tear early is usually simpler and more successful than treating a detachment later.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- A shadow or curtain moving across part of your vision, or a sudden drop in sight, makes this even more urgent.
- If your usual eye doctor is closed, go to a hospital emergency department, an eye hospital with emergency services, or a government medical college eye department.
- Do not drive yourself if your vision is affected. Ask someone to take you.
- Old floaters that have been there for years and are unchanged are common and usually not a concern; it is the sudden new ones with flashes that matter.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you whether your retina is torn or detached. Only an urgent dilated eye examination can show that.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Is my retina torn or detached?
- Do I need laser treatment or surgery?
- What symptoms should make me come back immediately?
- Should my other eye be checked too?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Emergency — call 112 now
- Call 112 or go to an emergency eye service today if you have sudden new floaters with flashes, a curtain or shadow over your vision, or sudden loss of sight.
Get help the same day
- Even if symptoms settle, get your eye examined the same day; do not wait for a routine appointment.
Sources
The evidence this explanation is built on.
- Retinal detachment National Eye Institute (NIH)
- Detached retina (retinal detachment) NHS
- Get a dilated eye exam National Eye Institute (NIH)
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
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