|
Polycarbonate material was developed by the aerospace industry for use in helmet visors worn by Apollo astronauts. Polycarbonate can also be found in bulletproof windows, airplane windows and riot police shields. The material is 10 times more impact resistant than other plastics, and are lighter and thinner than standard plastic or glass.
Who will benefit from polycarbonate lenses?
- Children
- People with high prescriptions
- Rimless frame and semi-rimless frame wearers
Non-glare coated lenses have a high level of light transmission due to multi-layered coating. The light transmission increases with additional coatings. Non-glare coatings let in more light than standard lenses so vision is improved. At night the coating minimises the halo effect. They are also cosmetically more pleasing as they remove all reflection from the lenses.
Who will benefit from non-glare coatings?
- Office workers (to reduce glare from fluorescent lighting and on VDU screens)
- Drivers – especially night driving
- People with a lot of one-on-one contact with others.
- Fashion and design conscious people.
- Rimless frames
 Semi-rimless styles have a frame only at the top of the lenses; with the rimless styles your lenses are "frameless," to complement your facial features. Rimless and semi-rimless frames are uniquely designed to have hidden screws or mountings so your glasses appear uninterrupted by hardware. For maximum aesthetics rimless frames should be used with anti-reflective coated lenses. Rimless or semi-rimless frames are not suitable for use with glass lenses. We suggest using polycarbonate lenses for maximum safety.
 UV rays are invisible to the eye but can inflict cumulative damage to the retina. UV radiation can be divided into three categories UVA, UVB and UVC. The amount of UV light depends on the surrounding environment. (For more details see: http://www.myhealthyvision.co.uk/uvray_youreyes.asp)
Who will benefit from UV coatings:
- People subjected to intense bright lights.
- People on certain medications (eg. Tranquillisers, antibiotics, oral contraceptives and anti-histamines).
- People subjected to sunlight – either in the mountains, sea or waters edge.
Lenses are hardened by the application of a varnish to the lens surface. The hard coating acts as an interface between the soft lens surface and other coatings (such as anti-reflection coatings) The hardening process enables the lens to withstand both scratches and lens deformation and prevents peeling of any additional coatings.
Who will benefit from scratch-resistant coatings:
- Scratch resistant coatings will benefit ALL spectacle wearers, especially children
- Sports people
- People with two pairs of spectacles where they are forever being taken on and off.
- Occasional wearers
|
