Flashes & Floaters: What You Need to Know
When Should You Be Concerned About Your Vision?
Flashes and floaters are common visual disturbances that many people experience as they age. While they are often harmless, sudden changes in flashes or floaters can be a sign of a serious eye condition, such as a retinal tear or detachment.
At The Eye Institute of Corpus Christi, our specialists provide comprehensive evaluations to determine whether your flashes and floaters are normal or require urgent medical attention.
What Are Flashes and Floaters?
What Are Eye Floaters?
Floaters appear as tiny, drifting shapes in your field of vision, often described as:
✔ Spots, specks, or strings that move when you move your eyes.
✔ Shapes that seem to disappear when you try to look directly at them.
✔ Shadowy or translucent cobweb-like strands.
Floaters are caused by small clumps of gel or cells in the vitreous humor, the clear gel-like substance inside your eye. As light passes through the eye, these clumps cast shadows on the retina, creating the effect of floaters.
What Are Eye Flashes?
Flashes appear as brief streaks or flickers of light, similar to:
✔ A camera flash or lightning streak in your vision.
✔ Flickering lights that occur when moving your eyes or in darkness.
✔ Sudden, bright flashes that come and go sporadically.
Flashes occur when the vitreous gel pulls on or tugs at the retina, stimulating light-sensitive cells. They are more common with aging and may indicate retinal traction or other underlying conditions.
Causes of Flashes & Floaters
Common, Harmless Causes
🔹 Aging (Vitreous Degeneration) – The vitreous gel shrinks and liquefies, leading to floaters.
🔹 Posterior Vitreous Detachment (PVD) – The vitreous pulls away from the retina, a common occurrence after age 50.
🔹 Eye Injury – Trauma can cause temporary flashes and floaters.
🔹 Migraine Auras – Some people experience flashing lights as part of a migraine episode, even without a headache.
Serious Conditions Requiring Urgent Attention
🚨 Retinal Tear or Detachment – If the retina pulls away from the back of the eye, vision loss can occur without immediate treatment.
🚨 Vitreous Hemorrhage – Bleeding into the vitreous gel can cause sudden vision changes.
🚨 Inflammation (Uveitis or Retinitis) – Swelling inside the eye may lead to floaters and blurred vision.
When to See a Doctor for Flashes & Floaters
Most floaters and flashes are not dangerous, but sudden changes could signal a medical emergency. Seek immediate care if you experience:
✔ A sudden increase in floaters or a shower of new floaters.
✔ Frequent, bright flashes of light in one or both eyes.
✔ A dark shadow or curtain moving across your vision.
✔ Blurry or decreased vision along with flashes or floaters.
If you notice any of these symptoms, contact The Eye Institute of Corpus Christi immediately. Retinal tears and detachments require prompt treatment to prevent permanent vision loss.
Diagnosis & Treatment for Flashes & Floaters
How Are Flashes & Floaters Diagnosed?
At The Eye Institute of Corpus Christi, we use advanced diagnostic tools to evaluate your retina and vitreous:
✔ Dilated Eye Exam – A comprehensive exam to check for retinal tears.
✔ Optical Coherence Tomography (OCT) – High-resolution imaging of the retina and vitreous.
✔ Ultrasound Imaging – If the retina cannot be seen clearly, an ultrasound helps detect tears or detachments.
Treatment Options
🔹 Monitoring – If your floaters are mild and not affecting vision, no treatment is necessary.
🔹 Laser Vitreolysis – A laser procedure to break apart large floaters, improving vision clarity.
🔹 Vitrectomy Surgery – In severe cases, the vitreous gel is removed and replaced to eliminate persistent floaters.
🔹 Retinal Surgery – If a retinal tear or detachment is detected, laser treatment or surgery is performed immediately.
