Is snow blindness more common at high altitudes?

Altitude and UV Radiation

At high altitudes, the atmosphere is thinner, and there’s less air to scatter or absorb ultraviolet (UV) radiation. This allows more UV radiation to reach the Earth’s surface, increasing the risk of snow blindness. In fact, UV radiation increases by about 10-12% for every 1,000 meters (3,300 feet) of altitude gain.

Snow Conditions and Reflected Radiation

Snow itself is highly reflective, bouncing back up to 90% of incoming UV radiation. This means that even if the sun is lower in the sky, the intense reflected radiation can still cause eye damage. In high-altitude areas, snow-covered terrain can amplify this effect, increasing the risk of snow blindness.

Prevention and Treatment Techniques

To prevent snow blindness, wear sunglasses that block 100% of UVA and UVB radiation, or use goggles specifically designed for snow sports. If you experience snow blindness symptoms (such as eye pain, blurred vision, or sensitivity to light), seek shade immediately and use eye drops to reduce discomfort.