Today there are different brands of progressive lenses, and it`s much more important with progressive lenses that how they fit than single-vision lenses.

The materials of lenses are various, for example computer glasses, plastic and glass lenses. On today's market, you are very easy to encounter fake prescription lenses, especially with progressive lenses. Only 22 states of USA require that opticians be liscensed in the USA, that result in that the quality and accuracy of lenses you get are in great difference.