Bright sun and blue skies make perfect 鈥渂luebird鈥 days for skiing, boarding, hiking, or just being out in the snow. But if you鈥檙e not wearing UV-blocking sunglasses in conditions where the sun鈥檚 rays reflect off snow, you could be headed for a painful case of snow blindness.
What Is Snow Blindness?
Snow blindness or sunburned eyes鈥攁lso known as photokeratitis (鈥減hoto鈥 for light and 鈥渒eratitis鈥 for inflammation of the cornea)鈥攃an sneak up on you. As with sunburned skin, by the time you notice the symptoms of snow blindness, you've already been out in the sun too long.
The same precaution applies when the sun reflects off water or sand, emphasizing the importance of protecting your eyes in various outdoor environments.
鈥淧eople don鈥檛 need to suffer from snow blindness, as it鈥檚 easily preventable,鈥 says Jean Tabin, MD, an ophthalmologist at the John A. Moran Eye Center at 麻豆学生精品版. 鈥淟uckily, it鈥檚 temporary, and the symptoms should subside in a day or two.鈥
Here鈥檚 what you should know about snow blindness:
Snow Blindness Symptoms
Symptoms include:
- Eye pain
- Burning or gritty sensation in the eye
- Sensitivity to light
- Blurry vision
- Seeing halos around light sources
- Swollen eyes and eyelids
- Headache
How to Treat Snow Blindness
- Give your eyes a rest.
- Stay indoors and wear sunglasses to reduce the amount of light exposure.
- If you wear contacts, take them out.
- Use preservative-free artificial tears to keep your eyes moist鈥攖hink of it like using aloe vera for sunburn on your skin.
- Whatever you do, don't rub your eyes. This will only worsen the irritation.
鈥淚f symptoms are severe, it may be best to see an ophthalmologist. You don't want to risk long-term damage.鈥
How to Prevent Snow Blindness
The best way to protect against snow blindness is to protect your eyes with sunglasses or snow goggles. It doesn't necessarily matter how dark they are as long as they block 99% of the sun鈥檚 UV rays.
"Bigger sunglasses are best," Tabin notes. "Wearing goggles or sunglasses that wrap around will give you the most protection."
Don鈥檛 ditch your sunglasses if you鈥檙e outside on a cloudy day鈥攁ny time of year. Although the sun鈥檚 glare is less noticeable on overcast days, UV rays still penetrate the clouds and can cause damage.