Progressive 1.67 Thinner Lenses
Progressive 1.67 Thinner Lenses
(progressively changes from your distance vision to your intermediate vision then to your near vision fields in one lens, so you don’t have to switch between multiple pairs)
This includes your prescription lenses, scratch-resistant, anti-reflective lenses that block 100% of UV filter.
Why Thinner Lenses?
One of the thinnest types of plastic lenses used to make glasses is known as 1.67. The name comes from the index of refraction of this type of plastic material. The index of refraction of a lens material determines thickness. As a comparison, Standard Plastic lenses, or CR-39 lenses, have an index of refraction of 1.49. Use 1.67 Thinner Lenses if you have a fairly strong to very strong prescription and your lenses will be lighter in weight and more cosmetically appealing.
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Any questions? Give us a ring at (215)-575-5188.