Recently, snow fell in the sky nationwide. And before that, the leading actor Zhao Yuting suffered from snow blindness because he did not wear goggles during the filming of snow scenes in the movie “Antarctica Extinction” for nearly a month. Snow is just the most common white color, so why is it that some people clinically experience eye discomfort after watching snow scenes? This is mainly because the pure white snow has a strong reflection and refraction of sunlight. The snow in our south is still relatively small, and sometimes even if it snows, it is difficult to have a thick, large area of snow. But many people go to the north to enjoy the snow, especially to see the sunlight under the blanket of snow, the eyes feel unbearable. This is because the reflection of the snow on the sun is very strong, especially at high altitudes above the snow line due to thin air, the reflection of the snow on the sun can reach 95%, the reflected light, especially ultraviolet radiation to the human eye, the eye cornea, conjunctiva is very easy to damage, stinging pain, fear of light, tears, eye congestion, edema, and in some cases, there is a short period of blurred vision. This series of symptoms and signs is called snow blindness, also known as electrophthalmia. The symptoms of snow blindness usually occur after the eyes have been exposed to bright light for 6-8 hours, so at first there is no sensation, and by the time symptoms appear, the cornea has been damaged. If these symptoms occur after looking at snow, move the patient to a dark place or cover the eyes with an eye shield and apply a cold compress with a damp towel, do not rub the eyes with your hands, and if necessary, use eye drops that promote epithelial repair and antibiotic drops under the guidance of an ophthalmologist to promote corneal conjunctival epithelial repair, prevent infection, and relieve discomfort. up to 5 to 7 days. In order to prevent the above symptoms, we should still do a good job of prevention before enjoying the snow, especially for a longer time in the strong sunlight to see the snow, to wear goggles, goggles to choose 100% UV protection. Experts reminded, snow driving people should also be careful, a long time to see the snow strong reflections not only damage the driver’s eyes, causing visual fatigue, but also seriously affect driving safety. Remind drivers to drive in snowy weather must take the necessary eye protection measures, such as wearing polarized sunglasses.