Lenses can be made of various materials of varying weight and thickness – the overall result depends on the density of the lens material used as well as your personal prescription. As a general rule, if you are long sighted your lenses are thickest in the middle and if you are short-sighted your lenses are thickest at the edge. The stronger your prescription the thicker and heavier your lenses will be, so in some cases it is important to consider using a thinner lens.
Thinner lenses reduce the overall thickness of your lenses, giving them a lighter feel which improves comfort as well as their appearance. Thinner lenses give you a wider range of frames to choose from and all come with an anti-reflection coating for clear vision without distractions.