What Is Blue-Light Blocking?
A simple guide from UltraFocus on what blue light is, why it matters, and which lenses to choose.
What is blue light?
Blue light is part of the visible spectrum, roughly 380–500 nanometres. Modern LED screens (phones, tablets, laptops, monitors) often peak around ~435 nm, which is why many people consider blue-light filtering for prolonged screen use. :contentReference[oaicite:0]{index=0}
Why filter blue light?
- Comfort during long screen sessions
- Helps reduce perceived glare and reflections
- Some users report fewer end-of-day “tired eyes”
Note: Blue-light lenses don’t “cure” eye strain; good habits (breaks, posture, lighting) still matter.
Where does it come from?
- LED device screens (phones, tablets, laptops, monitors)
- LED lighting and TV backlights
- Outdoors: daylight contains blue wavelengths too
UltraFocus Blue-Light Lens Options
Pick the level that suits your screen time and preference for clarity/colour.
| Lens | Material | Coatings | Blue-Light Blocking* | Best for | Notes |
|---|---|---|---|---|---|
| Standard Anti-Blue | Acrylic | Hard coat + AR (Blue HMC) | ~20.5% (430–440 nm) ~33.2% (410–450 nm) |
Everyday screen use | Slight warm/yellow hue |
| Premium Anti-Blue | Resin | Hard coat + AR (Blue HMC) | ~22.4% (430–440 nm) ~38.2% (410–450 nm) |
Frequent users wanting clearer optics | Slight warm/yellow hue |
| Enhanced Anti-Blue | Resin | Hard coat + AR (Blue HMC) | ~57.3% (430–440 nm) ~66.5% (410–450 nm) |
Heavy screen/gaming sessions | More filtration; mild colour shift |
*Blocking rates based on supplier spectrophotometer tests for similar lens types. Actual performance can vary by prescription, index, coating batch and lighting conditions. Data source referenced from an industry supplier page. :contentReference[oaicite:1]{index=1}
How do blue-light lenses work?
Specialised filters and coatings reflect/absorb selected blue wavelengths near common LED peaks. Anti-reflection (AR) also reduces mirror-like glare on the lens surface.
Which one should I choose?
- Standard – balanced protection for general work/study.
- Premium – step-up clarity with similar comfort.
- Enhanced – maximum filtration for extended gaming/creative sessions.
Care & Tips
- Clean with lens-safe spray and a microfibre cloth.
- Avoid household cleaners (they can damage coatings).
- Follow the 20-20-20 rule: every 20 minutes, look 20 feet away for 20 seconds.
Men Women Kids
Blue-Light FAQ
Do blue-light lenses make everything look yellow?
Most filters add a subtle warm tint. Higher filtration (like Enhanced) may show a slightly stronger shift. Many users adapt quickly.
Will these help with headaches or sleep?
They can improve visual comfort for some users, but individual results vary. Good sleep hygiene (dim lights, reduced late-night screen time) still matters.
Can I get these with my prescription?
Yes — blue-light filtering can be combined with prescription single-vision, bifocal, or varifocal lenses. Choose your preferred option during checkout.
Do I need blue-light lenses outdoors?
Daylight includes blue wavelengths. For outdoor comfort and UV protection, consider sunglasses or photochromic options.