Jan 07, 2025
Protect your eyes: The importance of sunglasses in high UV environments
Siddhartha JanaAustralia has some of the greatest levels of solar UV radiation in the world, thus eye protection is needed all year, especially when the UV index is 3 or above.
Source: Canva
Although UVA, UVB, and UVC radiation are invisible to humans, they can harm skin and eyes directly, dispersedly, or reflectively.
Source: Canva
Long-term problems like pterygium (surfer's eye), cataracts, or even skin cancer on the eyelids can result from excessive UV exposure, as can short-term impacts like photokeratitis (a "sunburn" to the cornea).
Source: Canva
Since children's eyes are less able to filter UV radiation, sunglasses are essential for protecting them from UV damage.
Source: Canva
UV radiation accelerates skin ageing by breaking down collagen and elastin, and squinting caused by intense light can result in creases and "crow's feet" around the eyes.
Source: Canva
Australia and New Zealand classify sunglasses according to their UV protection ratings (0–4), with Category 3 being the best for the majority of outdoor activities. Nearly 100% UV blockage is guaranteed by the "UV400" mark.
Source: Canva
By lowering glare and shielding against both direct and reflected UV rays, wrap-around sunglasses with tight-fitting styles and polarised lenses offer the best protection.
Source: Canva
Moderation is key, even if sunshine has advantages including regulating circadian rhythms and producing vitamin D. Protection is improved by wearing sunglasses with a wide-brimmed hat, sunscreen, and avoiding the hours of greatest UV exposure.
Source: Canva
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