Ozone vs eyes

Ruapehu Bulletin, Volume 6, Issue 314, 21 November 1989, Page 12

Ozone vs eyes

More New Zealanders will develop cataracts as a result of holes in the ozone layer unless they adequately protect their eyes.

This warning came as part of the educational activities undertaken by the New Zealand Optometrical Association (NZOA) during Eye Care Week (October 24-30). According to the NZOA ultra-violet light is a factor in clouding of the eye's lens (cataracts), eye-surface damage and other conditions including damage to the sensitive area at the back of the eye. A recent study undertaken in America proved a link between exposure to ultra-violet light and the developments of a type of cataract. Spokesperson for the New Ze al and Optomeirica! Association, Quentin Bennett says it is advisable for people to wear sunglasses which screen out 65 to 90 percent of available sunlight and they should be made of quality glass or plastics. Lenses that absorb less than 50 percent of

light are classified as fashion spectacles and are not sunglasses lenses. "At present, few manufacturers provide light transmittance levels on sunglass labels, making it difficult for people to judge their effectiveness," he says. "However a good rule of thumb is if your eyes can be seen through the lenses then they are probably not dark enough." "Excessive exposure to ultra violet light can lead to acute "snow blindness" (even without the snow) as well as cataracts and other chronic conditions," Bennett explained. , "It's important for New Zealanders to be aware of the increasing ultra-violet radiation levels and protect their eyes as we have a very sunny climate and we are also near the growing "holes" in the ozone layer over Antarctica," Mr Bennett said.