Floaters vs. Flashes: What’s the Difference?

Introduction

What is the Difference Between Floaters vs. Flashes? This is a frequently asked question by people who suddenly develop spots, lines, or flashes of lights in their eyes. Both floaters and flashes could be normal occurrences; however, they could sometimes indicate a more serious problem and require immediate attention from your doctor. Knowing what is the difference between floaters and flashes is essential in determining whether you just need to observe the occurrence of such symptoms, or see an eye doctor immediately.

What is the Difference Between Floaters and Flashes?

Floaters are small spots, cobwebs, threads, or shadow-like shapes that appear in the field of vision. They are due to small clumps found in the vitreous, which is a clear gel-like substance that fills the inside of the eye. Floaters tend to move along when one moves the eyes and they even move away when one tries to look at them directly.

Flashes on the other hand, are brief flashes or sparks of light. They happen because of the pull of the vitreous against the retina, or the light-sensitive layer found at the back of the eye.

Causes of Floaters

The possible causes of floaters include:

• Natural aging of the eyes

• The shrinking of the vitreous gel (posterior vitreous detachment)

• Nearsightedness (myopia)

• Eye injury

• Eye inflammation

• Bleeding into the eye

• Tearing of the retina or retinal detachment

In most instances, age-related floaters fade away with time.

Causes of Flashes

Some of the possible causes of flashes include:

1. Vitreous changes
2. Posterior vitreous detachment
3. Retinal tearing
4. Retinal detachment
5. Eye injury
6. Ocular migraines
7. Retinal inflammation

Since retinal tears may lead to retinal detachment very quickly, any person experiencing flashing should seek professional help immediately.

When Should You Go to an Eye Doctor Immediately?

It is normal to experience a few flashes and floaters. But there are some situations where seeking emergency eye care is necessary and include:

• Sudden appearance of floaters

• Multiple flashes of light

• The development of a curtain or shadow in your field of vision

• Sudden vision loss (peripheral or central vision)

• Blurry vision after flashing or floaters

• Injuries in the eye that lead to vision changes

Early treatment is necessary to preserve eyesight and avoid retinal detachment.

How Are Floaters and Flashes Diagnosed?

Your ophthalmologist will conduct a complete eye exam, including:

Dilation of the retina

Optical coherence tomography (OCT)

Ocular ultrasound in case of inability to examine the retina

Testing of vision

These tests will help your doctor determine whether the problem is harmless or related to some retinal issue.

Treatment

The treatment varies depending on the causes.

In case of harmless floaters:

• Just observation.

• Floating objects will eventually become invisible.

In case of harmful flashes:

• Laser therapy for retinal tears

• Cryotherapy

• Surgery for retinal detachment

• Treatment of other eye diseases

It is worth noting that patients with ocular migraines might need treatment of their migraines and not eye surgery.

Conclusion: Floaters vs. Flashes

The information provided in Understanding Floaters vs. Flashes: What’s the Difference? can assist you in distinguishing between normal age-related changes in the eyes and possible severe eye disorders. Although most cases of floaters and flashes are not dangerous, their sudden appearance is considered to be one of the symptoms of retinal detachment. Consequently, do not neglect any changes in your vision.