01 85 10 57 00 67 rue de Malnoue, 93160 Noisy-le-Grand
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Retinal diseases
Our specialities · Retina

Posterior vitreous detachment

Floaters & flashes of light · When should you see a doctor?

With age, the gel (the vitreous) that fills the eye gradually separates from the retina. It is a little as if the jelly inside your eye decided to move a little away from the retina: it often happens with age and is generally not serious if there is no retinal tear. At the Noisy-le-Grand practice, Dr Mayer Srour and Dr Yaïr Chetrit check the retina and rule out a tear.

Cross-section of the eye illustrating vitreous detachment: the vitreous separates from the retina, with the Weiss ring and floaters
The vitreous separates from the retina: a Weiss ring and floaters appear in the field of vision.
After age 55
very common, it is part of the normal ageing of the eye
Benign
without a retinal tear, no treatment is needed
4–6 weeks
a fundus check-up is systematically recommended

Vitreous detachment: the essentials in 30 seconds

  • How long does a vitreous detachment last? Floaters and flashes most often fade within a few weeks to a few months, but some floaters can persist for longer. A fundus check-up at 4–6 weeks is systematically recommended.
  • PVD is a normal ageing change of the vitreous gel, common between 50 and 70.
  • Harmless in the great majority of cases — but a dilated fundus examination within the following days is essential to rule out a retinal tear.
  • Immediate emergency if: a shower of black dots, repeated flashes, a dark veil in the field of vision.
  • Floaters fade with time; no treatment is needed in the simple form.
1 · What is it? 2 · Floaters & flashes Emergency signs 3 · Diagnosis 4 · Course & monitoring FAQ
1

What is posterior vitreous detachment?

The inside of the eye is filled with a transparent gel, the vitreous, attached to the retina. With age, this gel shrinks and eventually detaches from the surface of the retina: this is posterior vitreous detachment (PVD). In other words, the jelly filling your eye moves a little away from the retina.

It is a natural and very common process after the age of 55–60, affecting one eye and then often the other, a few months or years apart. In the great majority of cases it is harmless and needs no treatment — provided there is no retinal tear. This is precisely what the fundus examination checks.

The vitreous
transparent gel that fills the eye and shrinks with age
Both eyes
often affected one after the other
Factors
age, high myopia, cataract surgery
2

Floaters & flashes of light

Vitreous detachment shows itself through two typical symptoms, often appearing fairly suddenly:

Floaters
Small black dots, threads or cobwebs that drift across the field of vision and move with the eye. They are more visible against a bright background (white wall, sky).
Floaters: translucent filaments and dots standing out against a clear sky, as perceived by the patient
Flashes of light (phosphenes)
Brief flashes, especially in peripheral vision and in the dark: the vitreous pulls on the retina as it detaches.
Flashes of light (photopsia): sensation of lightning-like flashes in the field of vision

How long does a vitreous detachment last? The duration varies greatly from person to person. For some, floaters and flashes ease within a few weeks or months; for others, they persist for longer. The brain most often learns to ignore them and they become less bothersome. We systematically recommend a check-up at the practice at 4–6 weeks.

Remember above all

The 3 signs that mean you must be seen again urgently

In a minority of cases, a vitreous detachment can cause a retinal tear — the gateway to a retinal detachment, which is an emergency. These three signs should prompt you to be seen the same day:

1
A sudden increase in floaters (a “shower” of black dots).
2
The appearance of new flashes of light that are more intense or more frequent.
3
A black veil or a dark curtain hiding part of the visual field.

In that case, call 01 85 10 57 00 — emergencies are seen the same day.

3

Diagnosis, in a single visit

The essential test is the dilated fundus examination: it shows the vitreous detachment and, above all, allows us to check the whole periphery of the retina for a tear. If needed, it is completed using the practice's on-site equipment:

Dilated fundus examination
The key test: it confirms the PVD and inspects the peripheral retina for a tear.
Analyses the vitreoretinal interface and rules out traction or a macular hole.
More than 80% of the retina in a single image, to map the periphery.
Useful when floaters or an intravitreal haemorrhage are too dense to allow a view of the fundus.

If no tear is found, the PVD is harmless: we reassure you and schedule a check-up. If a tear is found, it is treated the same day with laser.

4

Course & monitoring

An isolated PVD is not treated. There is no medicine or surgery to make the floaters of a simple vitreous detachment disappear: they fade with time and the brain learns to ignore them. What to do is simple:

PVD without a tear

Simple monitoring: systematic fundus check at 4–6 weeks, then a consultation if any new symptom appears. No treatment needed.

PVD with a tear

A barrier laser (photocoagulation) is performed at the practice around the tear to “weld” the retina and prevent retinal detachment.

Discover medical laser treatment
Good habits

Vitreous detachment: good habits

1 · Have your retina checked

Recent floaters or flashes call for a dilated fundus examination, to rule out a tear.

2 · Shower of floaters + veil = emergency

A sudden increase in floaters, new flashes or a black veil: be seen the same day.

3 · An isolated PVD is harmless

Without a tear, there is no treatment: floaters fade and the brain learns to ignore them.

4 · The check-up at 4–6 weeks

We systematically recommend a fundus check-up at 4–6 weeks, once the detachment has run its course.

Vitreous detachment is most often harmless — the key is to check the retina and recognise the warning signs.
Patient information

The official information sheet from the Société Française d'Ophtalmologie

If a tear is treated, retinal laser treatment is described in the official SFO information sheet — worth reading before your session.

Laser treatment of the retina (PDF)

Floaters & flashes: seeing a doctor in Noisy-le-Grand

The Grand Paris Ophtalmologie practice promptly sees patients troubled by recent floaters or flashes of light, in Noisy-le-Grand and throughout eastern Paris (93, 94, 77): Bry-sur-Marne, Villiers-sur-Marne, Champs-sur-Marne, Chelles, Torcy, Marne-la-Vallée, but also Le Perreux-sur-Marne, Nogent-sur-Marne, Vincennes, Saint-Maur-des-Fossés, Créteil, Montreuil and Rosny-sous-Bois — fundus examination, imaging and laser on site.

Dr Mayer Srour, trained at the CHI de Créteil, and Dr Yaïr Chetrit examine the periphery of the retina and rule out a tear at the first visit. In an emergency, contact us: flashes, floaters: seek urgent care.

Content written and reviewed by Dr Mayer Srour, ophthalmic surgeon in Noisy-le-Grand (Grand Paris Ophtalmologie). Sources: Société Française d'Ophtalmologie (SFO), Haute Autorité de Santé (HAS), Ameli (French national health insurance website). Last updated: September 2026.
Frequently asked questions

Vitreous detachment: your questions

Answers from Dr Mayer Srour and Dr Yaïr Chetrit, ophthalmologists in Noisy-le-Grand.

Is vitreous detachment serious?

No, in the vast majority of cases. It is a natural, age-related process with no consequences, as long as there is no retinal tear. This is precisely what the fundus examination checks.

Do floaters go away?

They most often become less bothersome with time: they fade, drift out of the line of sight and the brain learns to ignore them. They do not always disappear completely, but significant, persistent discomfort should be reassessed.

What signs should alert me?

Three signs mean you should be seen the same day: a sudden increase in floaters, the appearance of new flashes of light, or a black veil in the field of vision — they may point to a retinal tear.

How long do the symptoms last?

The duration varies greatly: a few weeks to a few months for most people, sometimes longer. A check-up at 4–6 weeks is systematically recommended to make sure everything is stable.

Is treatment needed?

An isolated PVD is not treated: there are no eye drops or surgery for the floaters of a simple detachment. However, an associated tear is treated the same day with laser.

Can vitreous detachment affect both eyes?

Yes: it occurs in each eye, often a few months or years apart. After the first eye, any new symptom in the other eye warrants the same fundus examination.

Who is most affected?

Mainly after 55–60. The risk comes earlier in cases of high myopia, after cataract surgery or an injury.

Where can I be seen for floaters near Noisy-le-Grand?

At the Grand Paris Ophtalmologie practice, 67 rue de Malnoue in Noisy-le-Grand (93160). Dilated fundus examination, OCT and laser if necessary are carried out on site. Telephone: 01 85 10 57 00.

Related reading

News
Floaters and flashes of light
What is commonplace, and what requires an urgent examination.
Overview
Retinal diseases
AMD, diabetes, occlusions: all medical retina care at the practice.
Treatment
Medical laser
The barrier laser that secures a retinal tear.
Examination
Wide-field retinal photography
More than 80% of the retina in a single image to explore the periphery.

Recent floaters or flashes? Be seen quickly.

Fundus examination, imaging and laser at the Noisy-le-Grand practice — emergencies seen the same day.

Book an appointment on Doctolib 01 85 10 57 00