How to Choose the Best Sunglasses

Choosing the right sunglasses isn’t just about fashion—it’s about protecting your eyes and making sure you feel comfortable in bright light. Whether you’re looking for everyday wear or something specific for driving, here are some practical tips to help you pick the best sunglasses.

1. Why Light Protection Matters

Bright outdoor conditions can expose your eyes to up to 10,000 lux of light, compared to just a few hundred lux indoors. Sunglasses reduce this intensity, making it more comfortable for your eyes to handle bright conditions while protecting them from potential strain and UV damage.

2. Understand Tint Levels

Sunglasses come with different tint levels, which determine how much light is blocked:

• Category 0: Very light tint, blocks 0-20% of light. Suitable for cloudy days or fashion use.
• Category 1: Light tint, blocks 20-57% of light. Good for low sunlight and partly cloudy days.
• Category 2: Medium tint, blocks 57-82% of light. Perfect for general sunny days.
• Category 3: Dark tint, blocks 82-92% of light. Ideal for bright sunny conditions, such as at the beach or skiing.
• Category 4: Very dark tint, blocks over 92% of light. These are too dark for driving and should only be used in extremely bright environments, like high mountains.

For driving, stick to categories 0-3. Avoid category 4, as it blocks too much light and can reduce visibility.

3. Choose a Neutral Tint

The colour of your lenses affects how you see the world. Neutral tints, such as grey or brown, reduce light evenly across all colours, giving you a more natural view while protecting your eyes from excessive brightness.

4. Prioritise UV Protection

Tinted lenses may reduce brightness, but not all of them protect against harmful ultraviolet (UV) rays. Look for sunglasses that block 100% of UVA and UVB rays. Without this, even though your eyes feel comfortable, they might still be exposed to harmful radiation, leading to potential long-term damage.

5. Look for Compliance Marks

Sunglasses that meet the British Standard for UV protection ensure proper protection against both UVA and UVB rays. Look for the 'CE' mark (Conformité Européenne) or the 'UKCA' (UK Conformity Assessed) mark, which ensures they meet safety standards in the UK.

By understanding tint levels and ensuring your sunglasses offer full UV protection, you can keep your eyes safe while enjoying clear, comfortable vision, no matter how bright the sun.