How to Choosing Qualified Sunglasses :

Choosing qualified sunglasses involves ensuring they provide adequate UV protection, suit your needs, and meet safety standards. Here’s a concise guide to help you pick the right sunglasses :

1. 100% UV Protection: 

**Look for "UV400" or "100% UVA/UVB Protection": This blocks **all** harmful ultraviolet rays (UVA, UVB, UVC). 

**Avoid cheap, unlabeled sunglasses: Dark lenses without UV protection can *worsen* eye damage by dilating your pupils. 

2. Lens Color & Purpose:

**Gray: Neutral color, ideal for everyday use (driving, outdoor activities). 

**Brown/Amber: Enhances contrast, great for sports (golf, cycling) or cloudy days. 

**Green: Reduces glare and eye strain. 

**Yellow/Orange: Improves depth perception in low light (e.g., skiing at dusk). 

**Mirrored/Blue lenses: Best for bright environments (beaches, snow). 

3. Lens Material:

**Polycarbonate lenses: Lightweight, shatterproof, and affordable (good for sports). 

**Trivex lenses: Similar to polycarbonate but sharper optics. 

**Glass lenses: Scratch-resistant and clear optics, but heavy and fragile. 

**Polarized lenses: Reduce glare from reflective surfaces (water, roads) – perfect for driving or fishing.

4. Fit & Frame Design：

**Full coverage: Lenses should wrap around or block light from all angles (prevents peripheral UV exposure). 

**Comfortable fit: Adjustable nose pads and non-slip temples prevent slipping. 

**Sunglasses Frame material: 

Nylon/TR90: Flexible and durable (ideal for active use). 

Metal: Sleek but less suitable for high-impact activities. 

5. Certifications & Standards：

  **CE Mark(Europe): Meets EU safety standards. 

  **ANSI Z80.3(USA): Ensures optical clarity and UV protection. 

  **AS/NZS 1067 (Australia/New Zealand): Strict UV requirements. 

6. Special Scenarios：

**Driving sunglasses: Choose polarized lenses (gray or brown) to reduce glare. 

**Snow sports sunglasses: Use **Category 4** lenses (3–8% light transmission) with side shields. 

**Kids’sunglasses: Prioritize UV400 protection and unbreakable frames. 

Quick Checklist

✅ UV400 or 100% UV protection. 

✅ Polarized lenses (if needed for glare). 

✅ Proper fit (no gaps around the eyes). 

✅ Certification marks (CE, ANSI, etc.).

By prioritizing UV protection, lens functionality, and comfort, you’ll protect your eyes from sun damage (e.g., cataracts, macular degeneration) while staying stylish!