Ryan P.wrote a review of Smith I/O Interchangeable Optics Spherical Series Goggles on October 3, 2011
I'm not gunna lie I had a ton of issues with my lenses last year. I had 2 sets of red sol-x mirror somehow get and infinitely small amount of moisture between the lenses which left a pitted look and greatly effected visibility. They never fogged, but the pits would show up out of nowhere on a super cold day and never go away. Luckily Smith replaced them on warranty both times but because of the high demand for that particular lense I went most of the year without my sunny day lenses. Talking to my buddies who work at Bobo's in reno they actually had a number of warranty people bring their i/o's back in with the same problem. I have been using a variety of smiths for 20 years but this is my first spherical goggle with the edge of the lense exposed. I have never had 1 issue with moisture getting trapped between the lenses until this new pair. My buddy who I do 90% of my skiing with got the POC spherical goggle and had a similar but not as prevalent issue.
I'm not gunna lie we are doing some serious powder hunting in the BC so we are getting a lot of snow on our googles and the heat from hiking and riding snowmobiles often melts it, but still, never had one problem with my fully framed googles. Had several problems with my spherical lenses.
On a side note, they look bad ass and the field of view is amazing. From reading the reviews it looks like my experiences are pretty uncommon... maybe I am doing something wrong. I really feel that particular lense I had issues with last year is a POS.