Flashes and Eye Floaters

AI Overview

Flashes and floaters are common visual disturbances often caused by age-related changes in the eye's vitreous gel, but they can signal serious, sight-threatening conditions like retinal detachment. While often harmless, a sudden increase in these symptoms requires immediate (within 24 hours) evaluation by an eye care professional. 

Key Differences and Causes

• Floaters: Small specks, dots, or cobweb-like shapes that drift through the field of vision. They are caused by collagen fibers in the vitreous gel clumping together and casting shadows on the retina.

• Flashes (Photopsia): Brief bursts of light, lightning streaks, or sparks in the peripheral vision. They occur when the shrinking vitreous gel tugs on the retina.

• Common Cause (PVD): As people age (usually over 50), the vitreous gel shrinks and separates from the retina, known as Posterior Vitreous Detachment (PVD). While PVD causes flashes and floaters, the separation itself is usually not sight-threatening. 

  
  

When to Seek Emergency Care

Contact an ophthalmologist immediately if you experience:

• A sudden, high-volume "shower" of new floaters (often described as pepper or soot).

• A sudden onset of many new flashes.

• A dark shadow, curtain, or veil moving across any part of your vision.

• A decrease in side (peripheral) vision. 

  
  

Risk Factors

• Age: People over 50-75 are at higher risk as the vitreous naturally breaks down.

• Nearsightedness: High myopia makes individuals more prone to these issues.

• Previous Eye Surgery/Trauma: Cataract surgery or injury can increase risk. 

  Poudre Valley Eyecare 

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Diagnosis and Treatment

• Diagnosis: A dilated eye exam is necessary to examine the retina for tears or detachment.

• Treatment: Benign, age-related floaters usually do not require treatment. If a retinal tear is found early, laser treatment can often prevent permanent vision loss. If a retinal detachment occurs, surgery is required.