Understanding Flash Burn: Causes, Symptoms, and Prevention

Flash burn is a type of eye injury that occurs when the cornea—the clear, protective outer layer of the eye—is exposed to intense ultraviolet (UV) light for a short Flash Burn. This condition is also called welder’s flash, arc eye, or photokeratitis in medical terms. Although temporary, flash burn can cause significant discomfort and, in repeated cases, may lead to long-term eye damage.

Causes of Flash Burn

Flash burn is most commonly associated with exposure to high-intensity light sources. Key causes include:

  • Welding arcs: Electric arc welding produces UV light intense enough to burn the eyes in seconds if proper protection isn’t used.
  • Sunlight reflection: UV rays reflected off snow, water, or sand can cause flash burn, commonly referred to as snow blindness.
  • Tanning beds: Overexposure to artificial UV light can injure the eyes.
  • Laser exposure: Some industrial and research lasers emit UV light that can harm unprotected eyes.

The underlying problem is that the cornea absorbs the UV light, which can damage surface cells and cause inflammation.

Symptoms of Flash Burn

Flash burn symptoms usually appear a few hours after exposure and can include:

  • Pain or a gritty, sand-like feeling in the eyes
  • Redness and watery eyes
  • Blurred vision or sensitivity to light
  • Swelling of the eyelids
  • Temporary vision loss in severe cases

Although the symptoms can be alarming, most cases of flash burn heal on their own within 24 to 48 hours.

Treatment for Flash Burn

Immediate treatment focuses on relieving pain and preventing infection:

  1. Resting the eyes: Keeping the eyes closed or wearing sunglasses to minimize light exposure.
  2. Artificial tears or lubricating eye drops: Helps reduce dryness and irritation.
  3. Cold compresses: Can soothe discomfort.
  4. Avoid rubbing the eyes: This prevents further damage.
  5. Medical attention: Severe cases may require antibiotic or anti-inflammatory eye drops.

Flash burn usually resolves without lasting damage if properly managed.

Prevention is Key

Preventing flash burn is far more effective than treatment. Safety measures include:

  • Wearing protective goggles or helmets: Essential for welders or anyone working with intense light sources.
  • UV-blocking sunglasses: Protects eyes during outdoor activities, especially on snow or water.
  • Limiting direct exposure to UV sources: Avoid staring directly at the sun, tanning beds, or lasers.
  • Following safety protocols: Industries that involve UV light should have strict eye-safety regulations.

Conclusion

Flash burn may be temporary, but the discomfort it causes is significant, and repeated exposure can increase the risk of permanent eye damage. Awareness, proper protective gear, and careful handling of UV light sources are crucial for prevention. Protecting your eyes is not just about comfort—it’s about preserving one of your most vital senses.