When should you
wear them?
Sunglasses should be worn to eliminate the discomfort and the effects of the
harmful UV and infra red radiation emitted by the sun which can cause long
term damage to the eye which may not be reversible to avoid this damage a
good pair of sunglasses which will reduce the amount of glare and UV radiation
reaching the eye and protecting it against the damage caused by the sun.
When there is a high level of UV radiation such as at the snow or beach can cause the eye to become inflamed this condition can be extremely painful and can be prevented by wearing a good pair of UV protective glasses in these conditions.
Differences
in lens types:
Tinted:
To be an effective pair of sunglasses should screen about 75-90 percent of
the available visible light. If colour accuracy is essential then a grey tint
is essential because it does not affect the colour seen. Fashion tints however
do not block out adequate sun light to be classified as sunglasses.
Polarising:
Polarising lenses screen out the horizontal glare caused by snow, water or
from the road. They screen out UV rays from the sun and are also available
in prescription sunglasses.
Photochromic:
Commonly known as light sensitive lenses, the photochromic lenses darken when
they are exposed to sunlight. To be effective they should screen out 75-90
percent of the visible light.
Reflective lenses:
A thin sheet of metallic coating is added to the lenses to produce a mirrored
appearance, they are designed to be used in high glare conditions such as
at the snow or water. Some reflective lenses absorb both UV and infrared rays.
What to expect from your sunglasses?
A pair of sunglasses should conform to the Australian standards which states that glasses should be made from quality ophthalmic materials
The sunglasses should screen out UV light
Are ground and polished to be free of distortion and imperfections
Match in colour and absorptive power
Match your prescription if you are usually wearing sunglasses outdoors
Icons Range of Sunglasses:
ICON Eyewear offers the latest in fashion and designer labels with their range of sunglasses. Icon stocks:
- Dior
- Mako
- Maui Jim
- Escada
- Trussardi
- Chanel
- Gucci