Flashes and Floaters in Your Vision

New flashes, sudden floaters, or a curtain-like shadow in your vision can be signs of a serious retinal problem. Southwestern Eye Center provides prompt eye exams and retina evaluations across Arizona to help find the cause and protect your sight.

What Are Flashes and Floaters?

Floaters are small shapes that seem to drift across your vision. They may look like:

  • Specks
  • Dots
  • Threads
  • Rings
  • Cobwebs
  • Shadowy strands
  • Small moving spots

Floaters usually form inside the vitreous, the clear gel-like substance that fills the center of the eye. As the vitreous changes with age, tiny clumps or strands can form. These clumps cast shadows on the retina, and your brain sees those shadows as floaters.

Flashes are brief bursts of light that can look like lightning streaks, sparks, camera flashes, or flickering lights. They can happen when the vitreous rubs against or pulls on the retina. Some patients notice flashes that come and go for days, weeks, or longer.

Many people describe these symptoms as “flashes and floaters” when trying to understand what they are seeing. Either way, the important question is whether the symptoms are stable or sudden.

Illustration of flashes and floaters in vision over a bright Arizona landscape, showing specks, cobweb-like shapes, and brief light flashes.

When Flashes and Floaters May Be Normal

Woman in a light purple blouse sitting in a comfortable chair and having difficulty reading on her iPad, with a plant in the background.

Occasional floaters can happen as part of the natural aging process. They often become more noticeable when the vitreous gel begins to shrink, thicken, or pull away from the back of the eye. This process is called posterior vitreous detachment, or PVD.

A PVD can cause new floaters and flashes. Many cases are not dangerous, but the symptoms can feel alarming because they appear suddenly. That is why an eye exam matters. Your doctor needs to confirm that the retina is intact and that no tears or detachments have developed.

Floaters may also feel more noticeable in bright light, during screen use, after cataract surgery, or when looking at a plain background. Some fade or become less distracting over time as your brain adapts.

When Flashes and Floaters Are an Emergency

New flashes and floaters should never be ignored when they appear suddenly or come with other symptoms. A sudden increase in floaters or flashes may mean the vitreous is pulling hard enough on the retina to cause a retinal tear. If fluid moves through that tear, the retina can detach from the back of the eye.

A retinal detachment can cause permanent vision loss without prompt treatment.

Call Southwestern Eye Center right away if you notice:

  • A sudden increase in floaters
  • New flashes of light
  • A dark shadow in your side vision
  • A gray curtain or veil over part of your vision
  • Sudden blurry vision
  • Sudden vision loss
  • Floaters or flashes after eye trauma
  • Eye pain with new vision changes

If symptoms happen after hours or feel severe, seek emergency medical care

POV image of a dark shadow in side vision while watching grandchildren play in a lush backyard, representing urgent flashes and floaters symptoms.

Seeing New Flashes Or Floaters?

Sudden flashes, new floaters, shadows, or a curtain-like change in your vision should be checked as soon as possible. Southwestern Eye Center can help determine whether your symptoms are related to normal vitreous changes or a more serious retinal concern. Schedule an eye exam today or call right away if your symptoms are sudden, worsening, or affecting your vision.

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Causes and Risk Factors

Warm grandmother arranging flowers at home, representing how flashes and floaters can appear during everyday activities and should be evaluated if symptoms are new or sudden.

Flashes and floaters can have several causes. Some are age-related and mild. Others need urgent care.

Common causes may include:

Your risk may be higher if you are very nearsighted, have had cataract surgery, have diabetes, have a history of eye inflammation, or have had a previous retinal tear or detachment.

Flashes can also occur with migraine aura. These may look like jagged lines, heat waves, shimmering lights, or zigzags. Migraine-related visual symptoms can happen with or without a headache. Even so, new visual symptoms should be evaluated, especially if you have never experienced them before.

Symptoms You Should Track

Your doctor will want to understand exactly what you are seeing and when it started. Paying attention to the details can help your care team decide how urgently you need to be seen.

Before your visit, note:

  • When the symptoms began
  • Whether they started suddenly or gradually
  • Whether one eye or both eyes are affected
  • Whether floaters are increasing
  • Whether flashes happen in the dark or with eye movement
  • Whether you see a curtain, shadow, or missing area
  • Whether you have eye pain, headache, trauma, or recent surgery
  • Whether you have diabetes or another medical condition

One simple way to check is to cover one eye at a time. This can help you tell whether symptoms are happening in one eye or both.

Senior man covering one eye while sitting on a lush enclosed patio, representing how flashes and floaters may affect everyday vision.

Diagnosis at Southwestern Eye Center

Eye doctor performing a slit lamp exam on a senior man, representing evaluation for flashes and floaters at Southwestern Eye Center.

Diagnosing flashes and floaters starts with an eye exam. In many cases, your doctor will dilate your pupils to look closely at the retina, vitreous, optic nerve, and back of the eye.

Your evaluation may include:

A comprehensive eye exam helps your doctor identify whether your symptoms are related to normal vitreous changes, a retinal tear, inflammation, diabetic eye disease, or another condition.

Flashes and Floater Services at Southwestern Eye Center

Southwestern Eye Center offers multiple services that may be helpful if you have flashes and floaters.

A comprehensive eye exam can help determine whether your symptoms are routine, medical, or urgent. Retina care may be recommended if your doctor sees signs of vitreous traction, retinal tear, retinal detachment, diabetic retinopathy, macular disease, or other retinal concerns.

Relevant care may include:

  • Comprehensive eye exams
  • Urgent eye evaluations
  • Retina evaluations
  • Retinal detachment care
  • Diabetic eye disease care
  • Macular disease evaluation
  • Eye inflammation evaluation
  • Follow-up monitoring after cataract surgery

Because services vary by location, the scheduling team can help direct you to the right office and provider based on your symptoms.

Man on the phone scheduling follow-up eye care, representing the importance of prompt evaluation for flashes and floaters at Southwestern Eye Center.

Do Not Wait on Sudden Vision Changes

Flashes and floaters can feel easy to dismiss, especially if you have had an occasional floater before. But sudden changes deserve a closer look. If you notice new flashes, a sudden increase in floaters, a shadow in your side vision, or a curtain over your vision, contact Southwestern Eye Center right away so your eyes can be evaluated promptly.

FAQ: Flashes and Floaters

Flashes and floaters are visual symptoms that may appear as spots, specks, cobwebs, threads, or flashes of light in your vision. Floaters often come from small clumps inside the vitreous gel, while flashes can happen when the vitreous pulls or rubs against the retina.

Occasional floaters can be common with age, especially as the vitreous gel changes. However, new or sudden flashes and floaters should be checked, as they can sometimes signal a retinal tear, retinal detachment, or another serious eye condition.

You should seek care right away if you notice many new floaters, repeated flashes of light, a dark shadow in your side vision, a gray curtain over part of your vision, sudden blurry vision, or sudden vision loss. These symptoms may indicate a retinal tear or detachment.

Yes, they can. Sudden floaters, flashes, a curtain-like shadow, or loss of side vision can be warning signs of retinal detachment. Retinal detachment is serious and needs prompt diagnosis and treatment to help protect vision.

Southwestern Eye Center may diagnose flashes and floaters with a comprehensive eye exam, dilated retinal exam, slit-lamp exam, retinal imaging, OCT testing, or referral to a retina specialist. The goal is to determine whether the retina is healthy and whether treatment is needed.

Some floaters become less noticeable over time, especially when they are caused by age-related vitreous changes and the retina is healthy. Flashes may also settle, depending on the cause. Even so, new symptoms should be evaluated before assuming they are harmless.

Some patients notice floaters more after cataract surgery because vision is clearer or because the vitreous changes with age. New floaters after cataract surgery should still be checked, especially if they appear suddenly or are accompanied by flashes, shadows, or vision loss.

Yes, diabetes can contribute to retinal problems that may cause floaters, blurry vision, or vision changes. People with diabetes should have regular dilated eye exams and seek prompt care if new floaters, flashes, or vision loss occur.

Treatment depends on the cause. Some floaters only need monitoring. Retinal tears may require laser or cryotherapy. Retinal detachment may require surgery. If floaters are related to inflammation, bleeding, diabetes, or another condition, treatment focuses on that underlying issue.

Southwestern Eye Center evaluates patients with flashes and floaters across Arizona. Depending on your symptoms and exam results, your care may include a comprehensive eye exam, an urgent evaluation, a visit with a retina specialist, retinal imaging, or retinal treatment.

Schedule an Eye Exam for Flashes and Floaters

Your vision can change quickly when the retina is involved, and early evaluation can make a major difference. If you are seeing flashes and floaters, schedule a comprehensive eye exam or call Southwestern Eye Center for guidance, especially if the symptoms are new, sudden, or worsening.

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