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What are the lightest weight eyeglass lenses?
Trivex Lenses polycarbonate (abbe value 30) making it much better in optical clarity with fewer chromatic aberrations. Trivex also has a slightly lower density so it is lighter than polycarbonate. In fact, Trivex is the lightest weight lens material available.
What is the difference between 1.67 and 1.74 lenses?
1.74 high index lenses are thinner and lighter than 1.67 high index lenses. Though both reduce the eye distortion caused by strong prescriptions (making your eyes look bigger or smaller than they are), 1.74 high index lenses accomplish this better than 1.67 high index lenses do.
How do I get the thinnest lenses for my prescription?
For the thinnest, most attractive glasses: Choose a lens material with a refractive index greater than 1.60. The higher the index of refraction, the thinner your lenses will be. Lenses with a refractive index of 1.67 and higher can be less than half the thickness of regular plastic lenses.
What are light reactive lenses?
Light reactive lenses change in the light, keeping your eyes protected from the sun’s harmful UV and HEV (High energy visible light, otherwise known as blue light) light when outdoors and clarity indoors where you don’t need protection. They help keep your eyes safe no matter where you end up.
Which is thinner polycarbonate or high index?
Lens materials affect thickness and weight The same attribute that allows high-index to be thinner, makes it heavier. With all things equal, polycarbonate is up to 18\% lighter than high-index.
What is the difference between trivex and high index lenses?
Trivex has a low index of 1.53, similar to standard plastic. High index plastic’s index ranges from 1.67 to 1.74, making it considerably thinner and more lightweight than Trivex, especially in higher prescriptions. High index plastic has similar scratch resistance to Trivex.
How thick is a 1.74 lens?
For power more than that, choose the thinnest lens, 1.74 index. It will be around 5mm to 8mm.
What is the thinnest lens for high prescriptions?
1.74 index lenses
1.74 index lenses are the thinnest lenses for high prescriptions available. These ultra-light, ultra-sleek lenses are the thinnest kind developed yet, and accommodate the highest prescriptions possible.
How much thinner are thin lenses?
For some prescriptions, thinner lenses are 25-30\% thinner AND lighter compared to old-fashioned, basic plastic lenses. Some prescriptions will benefit even more with Ultra thinner lenses, which could be up to 45\% thinner and lighter.