High Index Lenses

When purchasing glasses one often has to choose between either style or durability, with presentation being favoured to the detriment of practicality or vice versa. However, glasses with High Index Lenses are lightweight and stylish whilst providing full protection from UVA and UVB ultraviolet light and being protected from dirt and other such substances due to their hydrophobic coating.



High Index Lenses are available in a range of sizes which are recognised by the refractive index, with thicknesses from 1.59 to 1.74, (the larger the number signifying a smaller and lighter lens). However, even though the thin 1.59 index polycarbonate lenses are as thin as the 1.6 index plastic lenses and are 12% lighter as standard, they are 12 times more shock resistant than standard 1.5 index lenses. Also, the fact that polycarbonate lenses are used in the manufacture of safety spectacles shows the strength of this light material which, when combined with rimless titanium frames, produce the lightest, yet most durable, spectacles available.



Thin 1.6 index lenses, which are 20% thinner and 25% lighter than standard 1.5 index lenses, and super thin 1.67 index lenses, which are an additional 15% lighter and thinner, both have full UVA and UVB absorption as standard (in order to protect the eyes from the sun’s harmful rays) as well as anti-scratch and UV400 coating which eliminates residual reflections on the surfaces of the lenses. It is also possible to purchase Transition Photochromic (light reactive) and Polarised lenses in these thicknesses, meaning that there are high index lenses for any occasion due to their versatility.



Ultra Thin 1.74 index lenses are the thinnest and lightest that are available, being 10% lighter and thinner than super thin 1.67 lenses, but the fact that anti-reflective and anti-scratch coating as well as UVA and UVB absorption are included as standard shows that one does not have to compromise on practicality and durability when choosing ultra-thin high index lenses.



Natalie Eastaugh is the Internet Marketing Specialist for JDRWebsites.co.uk

If you wish to find out more on high index lenses

as well as information about Glasses Frames and Lenses, go to www.glassesframesandlenses.com