Does snow reflect more harmful UV radiation than water?

Reflection and UV Radiation

When sunlight hits snow, it is reflected back into the environment due to the high albedo (reflectivity) of the snow’s surface. This reflected radiation includes a significant amount of ultraviolet (UV) energy, which is a major contributor to eye damage and snow blindness. In fact, studies have shown that snow can reflect up to 85% of incoming UV radiation, making it a significant risk factor for eye damage in high-altitude or snowy environments.

Snow Blindness and Eye Protection

Snow blindness, also known as photokeratitis, is a painful and potentially debilitating condition that occurs when the eyes are exposed to high levels of UV radiation. Symptoms can include eye pain, blurred vision, and increased sensitivity to light. To prevent snow blindness, it is essential to wear protective eyewear that blocks both UVA and UVB radiation. A good pair of sunglasses should have a UV protection factor (UPF) of 30 or higher and wrap around the eyes to prevent UV radiation from entering from the sides.

Prevention and Treatment

Preventing snow blindness is easier than treating it. When working or playing in snowy environments, make sure to wear protective eyewear and take regular breaks to give your eyes a rest. If you do experience snow blindness, seek medical attention immediately. Treatment typically involves administering pain medication, applying cool compresses to the eyes, and taking rest to allow the eyes to recover. In severe cases, hospitalization may be necessary to prevent long-term damage.