About this symptom
People may notice brief light flashes, small moving dots, thread-like shapes or translucent floaters. Important details are when they began, whether one eye or both are affected, how many appeared, and whether a shadow or loss of peripheral vision developed. These experiences cannot be assessed safely through text messages alone.
Clinical features
Some floaters result from common age-related changes in the vitreous gel. However, a sudden shower of floaters and flashes can accompany a retinal tear, while a curtain-like shadow may indicate retinal detachment. The absence of eye pain does not exclude a dangerous retinal condition.
Important differences and warning signs
An ophthalmologist reviews the onset, checks visual acuity and examines the retina, including the peripheral retina, sometimes after dilating the pupil. Optical coherence tomography (OCT) may add information about certain retinal structures, but cannot replace a careful peripheral retinal examination when a tear is suspected.
Assessment and individual care
New symptoms merit urgent ophthalmic assessment. Management depends on the actual findings and may range from observation to specialised treatment if a retinal threat is confirmed. Waiting for the symptoms to disappear without assessment may risk losing an opportunity for timely care.
Related information: Eye pain and light sensitivity.
Signs and symptoms
- Brief flashes or lightning-like light in the visual field.
- New numerous specks, threads or floating shadows.
- A dark curtain, peripheral shadow or quickly worsening vision.
Diagnosis and tests
Urgent examination of the retina and periphery, with pupil dilation when indicated, is important. OCT alone does not rule out a peripheral retinal tear.
Care and treatment approaches
Treatment is determined after examination, from observation to specialist retinal intervention when indicated; do not select treatment from an online description.
When to seek urgent care
A sudden shower of new floaters, flashes together with a dark curtain or rapidly reduced vision requires a same-day emergency ophthalmology assessment. For a severe acute emergency call 103.
Frequently asked questions
Are all eye floaters dangerous?
No, but sudden new or numerous floaters need a retinal examination because symptoms alone cannot exclude a tear.
Is OCT alone enough to rule out a retinal tear?
No. When a peripheral retinal tear is suspected, examination of the retinal periphery is essential.
What does a dark curtain across one eye mean?
It may be a retinal detachment warning sign and requires urgent ophthalmic examination the same day.
Information sources
Medical source links used when preparing this article.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
