Hot answers tagged sunglasses
Personally you don't need to go for any of the name-brands, unless that is important to you. Some things to look for: Comfort. Wear them for several minutes. Yes, the salesman is trying to wrap up this sale in under 2 minutes so he can get more commission. You will likely be wearing the shades for hours on end, so keep them on for at least a couple ...
Regular polarized sunglasses are usually meant for drivers of cars, as these glasses, in addition to darkening the sky, also suppress glare/reflections. If you travel in snow, light will come from all different angles and directions and will therefore be polarized in all kinds of directions, so a mere polarizer will not filter a sufficient amount of light. ...
Polarized sunglasses, as with other type of sunglasses may not block enough UV to be considered safe. From WikiPedia: for adequate protection, experts recommend sunglasses that reflect or filter out 99-100% of UVA and UVB light, with wavelengths up to 400 nm. Sunglasses which meet this requirement are often labeled as "UV400. In other words, ...
Polarization and UV protection on sunglasses are two different things. While UV refers to light of a wavelength of approximately 10nm to 400nm, light of any wavelength can be polarized. So polarized sunglasses do not generally protect against UV, they also need a dedicated UV filter. Light emitted by the sun oscillates in all directions perpendicular to the ...
Regular sunglasses should give you protection from snow blindness, so long as they protect against UV radiation. How well they protect you is dependent on how well the lenses cover your eyes, and how well the lenses or coatings filter or deflect UV radiation.
Various anti-fog products will work. I actually use the Rain-X anti-fog fluid (I had it for the car anyway and tried it successfully) You just need to clean the inside thoroughly, then apply it and it should last an entire season.
Ventilation is your friend. I hate to say it - but the glasses I've found that have this dialed are usually a little more expensive. After suffering through fog, wind sheer, and poor optics, I found a high end pair of glasses in the back-country, and my eyes were opened. As a second option, removing your glasses immediately when you stop (or even sliding ...
When I first planned my trek in Himalays I was suggested to keep my Gogs and Glares with me when I am outdoor-bound, in snow. A good article in my Adventure related Database rtf files says: "Hours of bright sunlight can burn the surface of the eye, causing a temporary but painful condition known as Photokeratitis. Over time, unprotected exposure can ...
In Europe your will be hiking on altitudes less than 5000 m, and on these altitudes you can go with sunglasses without heavy specialized equipement. However not any piece of sunglasses will do. First, they have to be either made of glass (which stops UV rays) or special UV-proof plastic. Not every plastic stops UV rays, and if not, using it is even more ...
Any sunglasses or will help protect against snow blindness. UV protection is highly recommended.
I own only glacier glasses and use them as sunglasses as well (I take off the "blinders"). If you decide to go with sunglasses only, make sure they offer proper UV protection (not all of them do). Reasons as explained by @WedaPashi (I'd only add that while cataracts can be operated IMHO that is no reason not to try and avoid them).
The sides on glacier glasses are invaluable when on a snowfield, as the sheer amount of light hitting your eyes is increased dramatically by the high reflection from the snow. Ordinary sunglasses allow a lot of light to hit your eye from all sides. I would recommend always using the sides when on snowfields.
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