Comment Re:Plastic Frames? (Score 1) 97
Plastic frames hide the lens thickness and support the weight of glass lenses. They require more care in the choosing stage as they are less easy to shape. Personally, I go for optical quality over pure vanity and plastic frames allow me to have large area, low aberration lenses. Having said that, they have to look acceptable and I always had a problem with thick lenses in metal frames looking like glass bottle bottoms. Plastic frames+glass comfortably hide a 4-5mm edge thickness.
As for the strength the pairs I have now have metal running through the arms.