Sun Protection Advice

Danger to the Eyes

Depletion of the ozone layer has become a serious problem for the health and welfare of the world's populations. Since 1979 there has been a 4% decrease in the level of atmospheric ozone, therefore, as the ozone layer decreases the level of Ultraviolet B (UVB) increases causing millions of people to unknowingly damage their eyes from UV.

Concentrate... here comes the science bit

For convenience UV radiation is subdivided into three elements, UVC, UVB and UVA:



1 nanometre (nm) = 1 billionth of a metre.

UVC - Wavelengths below 286nm are effectively filtered out by the ozone layer surrounding the earth. The amount of absorption varies and is reduced near to the equator and at high altitudes due to the reduced atmospheric thickness.

UVB - Wavelengths between 286nm and 320nm are responsible for sunburn and snow blindness as well as cancer. The amount of ultra-violet affecting a person is substantially increased by the reflection from surfaces such as snow, sand, and water.

Sunglasses, therefore, play an ever-increasing important part in the protection against ultra-violet radiation and its possible medical implications.

To this end there are now tint classifications introduced under European CEN Regulations which are as follows:

For any more questions you may have with regard to any of the above or UV in general please contact us at info@sunglassplus.co.uk