Editing Corrective lens (section)

==== Polycarbonate ====
* [[Refractive index]] ({{mvar|n}}{{sub|d}}): 1.586
* [[Abbe number]] ({{mvar|V}}{{sub|d}}): 30
* [[Density]]: 1.2 g/cm³
* [[Cutoff (physics)|UV cutoff]]: 385&nbsp;nm

Polycarbonate is lighter weight than normal plastic. It blocks UV rays, is shatter resistant, and is used in sports glasses and glasses for children and teenagers. Because polycarbonate is soft and will scratch easily, a scratch-resistant coating is typically applied after shaping and polishing the lens. Standard polycarbonate with an Abbe number of 30 is one of the worst materials optically if chromatic aberration intolerance is of concern. Along with Trivex and the high-index plastics, polycarbonate is an excellent choice for rimless eyeglasses. Similar to the high-index plastics, polycarbonate has a very low Abbe number, which may be bothersome to individuals sensitive to chromatic aberrations.