Types

What Are Flashes and Floaters?

Choose a preferred language

Have you ever seen flashes of light, stars, or streaks that aren’t really there? A few of these flashes are seen by everyone from time to time. Usually you see them in one eye at a time. Flashes are often caused by the gel (vitreous) inside your eye pulling on the retina. The retina is a membrane that lines the inside of your eye.

Floaters look like dark specks, clouds, threads, or spiderwebs moving through your eyesight. Most people see them once in a while. Floaters may be pieces of gel or other material floating inside your eye. They are usually harmless.

Three-quarter view of cross-sectioned eye showing shrinking vitreous pulling on retina.Three-quarter view of cross-sectioned eye showing shrinking vitreous and floaters.


Who gets flashes?

As you age or if you are nearsighted, you are more likely to see flashes. Nearsightedness is when you have fuzzy distance vision. Sometimes flashes are a sign of other eye problems that should be evaluated and may need care.


Who gets floaters?

The older you get, the more likely you’ll notice floaters. Floaters can also be caused by an eye injury or surgery. People who are very nearsighted may get more floaters. If floaters appear suddenly or greatly increase in number, see your healthcare provider as soon as possible. This may be a sign of an eye problem.

Online Medical Reviewer: Chris Haupert MD

Online Medical Reviewer: Raymond Kent Turley BSN MSN RN

Online Medical Reviewer: Rita Sather RN

Date Last Reviewed: 12/01/2022

© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

Find a Provider

View Our Directory

Find a Location

View Our Practices
Related Articles
Read article
Eye Care
Meibomian Gland Blockage

The meibomian glands are small glands located inside the upper and lower eyelids. They secrete oils that work with tears. If your meibomian glands become blocked by thickened oils, your eyes will become dry. Your eyes may feel irritated.

Read article
Eye Care
Retinal Tear

With age, the gel that fills the eye contracts, and can tear the retina. This causes floaters and flashes of light. It can lead to retinal detachment and vision loss.

Read article
Eye Care
Eye Bruise (Contusion)

An eye contusion (bruise) can cause pain and swelling around the eye. The skin may also change color.

Read article
Eye Care
What Is Blepharitis?

Blepharitis is a redness and swelling (inflammation) of the eyelids. The membrane covering the inside of your eyelid and the white of your eye may also become inflamed. It can’t always be cured. But it can be controlled.