Cornea Sunburn

Cornea sunburn can result in bloodshot eyes.

The cornea is the clear tissue that covers the iris to protect the deeper structure of the eye. The cells found in the corneal surface behave just like skin cells. Exposure to ultraviolet radiation from light sources can cause cornea sunburn.

Causes

Ultraviolet rays from the sun or light reflecting from bright surfaces such as water, sand or snow can cause cornea sunburn. Powerful light sources such as the sunlamp in the tanning booth, photographer's flood lamp, halogen lamp and even a welding torch can also cause cornea sunburn.

Symptoms

Prolonged exposure to ultraviolet light, from three to 12 hours, can create vision problems typical of cornea sunburn. Symptoms include pain in the eyes, light sensitivity, excessive tearing, blurry vision or bloodshot eyes. In severe cases, temporary vision loss may occur.

Protection

According to the American Optometric Association, wearing protective eye wear, even on cloudy days, can reduce harmful ultraviolet radiation. Look for sunglasses or protective contact lenses that offer 100 percent UV protection and screen out 75 to 90 percent of visible light.

References

• emedicinehealth: Corneal Flash Burn
• American Optometric Association: Keep an eye on harmful UV rays.
• Preventblindness: How can UV rays damage your eyes?