polycarbonate lenses are a type of organic lenses, ie, consist of a polymer, but unlike the organic polymer forms long chains that parallel with few links between them, this provision makes the lens present a high impact resistance.
The great advantage of polycarbonate lenses is that they are more resistant to organic lenses, so it is recommended for rimless eyewear (drilled). Furthermore, the refractive index is 1.6, so a lens is more fine organic a CR-39 lens. Another advantage is its lightness due to low density.
The disadvantages as with organic lenses is its ease of scratch, so it is necessary to use a scratchproof treatment or hardened to prevent scratching easily. It also features optical quality least the low-index organic lenses, so that chromatic aberration (the appearance of colored shadows around the objects) is more evident when looking through the lateral ends of this type of lenses.
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