Australia has one of the highest UV indexes in the world. On a clear summer day in Brisbane or Perth, the UV index can hit 12 or above — classified as "extreme" by the World Health Organisation. If you're training outdoors, your eyes are on the front line. Here's what you need to know about UV protection in sports eyewear.
Why UV Protection Matters for Athletes
Prolonged UV exposure without eye protection can lead to:
- Photokeratitis — essentially sunburn of the cornea, causing pain and temporary vision loss
- Cataracts — UV exposure is a leading risk factor for cataract development
- Pterygium — a growth on the eye's surface common in outdoor workers and athletes in sunny climates
- Macular degeneration — long-term UV damage to the central retina
Athletes are at higher risk because they spend more time outdoors, often during peak UV hours (10am–3pm), and physical activity increases blood flow to the eyes.
What is UV400 Protection?
UV400 is the gold standard for eye protection. It means the lens blocks all light wavelengths up to 400 nanometres — covering 100% of UVA and UVB rays. Any sports sunglass worth buying should be UV400 rated.
Note: lens darkness (tint category) does not equal UV protection. A light Cat 1 lens can offer full UV400 protection, while a dark non-UV-rated lens can let harmful rays through. Always check the UV rating, not just the tint.
Lens Categories Explained
- Cat 1 (43–80% VLT) — Light tint, indoor/overcast use only. Not suitable for outdoor sport.
- Cat 2 (17–43% VLT) — Medium tint, good for variable or overcast outdoor conditions.
- Cat 3 (8–18% VLT) — Dark tint, ideal for most Australian outdoor sport conditions.
- Cat 4 (3–8% VLT) — Very dark, for extreme glare (beach, snow, high altitude). Not suitable for driving.
Altra S1 UV Protection
Every Altra S1 sunglass is UV400 rated and built for Australian outdoor conditions:
- RYZE - Black Out — Cat 4 (6% VLT). Maximum UV and glare protection for extreme conditions.
- RYZE - Sol — Cat 3 (13% VLT). Gold polarised lens for road running and long outdoor sessions.
- RYZE - Eclipse — Cat 3 (17% VLT). Ice blue polarised lens, ideal all-rounder for Australian sport.
- RYZE - Viper — Cat 2 (20% VLT). Green polarised lens for trail running and variable light.
- RYZE - Nova — Cat 2 (24% VLT). Pink polarised lens for bright, high-contrast conditions.
Tips for Outdoor Athletes in Australia
- Always train with UV400-rated eyewear, even on overcast days (UV penetrates cloud cover)
- Choose Cat 3 or Cat 4 lenses for midday sessions when UV is at its peak
- Pair sunglasses with a hat or cap for maximum facial UV protection
- Replace lenses if they're scratched — scratches can compromise optical clarity and UV coating
Bottom Line
UV protection isn't optional for Australian outdoor athletes — it's essential. All Altra RYZE sunglasses are UV400 rated and built to perform in Australia's harshest conditions, starting at $100 AUD.