Are prescription lenses ok for sport use?

Are prescription lenses ok for sport use?

Be wary of using ‘normal’ prescription lenses for sports use especially where impact protection is required such as tennis, clay target shooting and cricket. Virtually all prescription lenses made today use a material called CR-39 and it has certainly revolutionised lens making. However CR-39 does not provide a high level of impact protection and it can shatter. Lightweight, impact-resistant polycarbonate and Trivex lenses are the best choice for safety glasses, sports eyewear and children’s eyewear. Most opticians are not able to make prescription lenses from polycarbonate or Trivex but there are specialist manufacturing opticians that can. You will also come across plenty of online material claiming that polycarbonate provides a poor visual experience. Such views are out of date. Current generation polycarbonate lenses are typically Class 1 optical grade and the visual experience is excellent.

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General guide to sunglass categories and their uses

General guide to sunglass categories and their uses

We are often asked about the Category of lenses used for sunglasses and eyewear – what do they mean. The categories range from 0 to 4 with each one covering a range of VLT (visible light transmission – basically how...
The benefits of wrap-around sunglasses

The benefits of wrap-around sunglasses

Enhanced UV protection Full wrap, sports style sunglasses keep out the elements like sand, dust, grit and wind from getting into your eyes - potentially painful and dangerous. Importantly, unlike "normal" leisure style sunglasses they also stop glare and UVR...
Beware of the dangers of ‘street’ sunglasses

Beware of the dangers of ‘street’ sunglasses

On your overseas holiday this summer you'll no doubt come across beach, street and market stall vendors selling sunglasses. Very rarely is it worth buying these, however cheap they are. Chances are the lenses will be poor quality with distortion...