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Product Introduction
Optical Convergence: Advanced UV420 Blockers for Retinal Health
While standard UV400 lenses block radiation up to 400nm, recent research indicates that the "High Energy Visible" (HEV) light between 400nm and 420nm is also a significant contributor to retinal oxidative stress and age-related macular degeneration (AMD). Our UV420 Protective Resin lens is engineered with a specialized UV-absorber molecule integrated directly into the monomer during the casting process. Unlike surface coatings that can scratch off, this internal blocker provides permanent, consistent protection across the entire lens. This material filters out the most harmful spectrum of blue-violet light while allowing "healthy" blue-turquoise light—which is essential for regulating circadian rhythms and mood—to pass through. The result is a lens that remains visually clear without the distracting yellow or purple reflections typical of older blue-blocking technologies. By shielding the eye from both ultraviolet rays and the most aggressive portion of the blue light spectrum, the UV420 lens serves as a critical preventative tool for everyone from children with developing eyes to elderly patients seeking to preserve their long-term vision. It is the gold standard for daily clear-lens protection in a world of increasing digital and atmospheric light exposure.
Specification
| Protection Range | Full Cut up to 420nm (HEV) |
| Material Type | Monomer-infused Protective Resin |
| Clarity | >98% Light Transmission (with AR) |
| Refractive Index | 1.56, 1.60 (MR-8), 1.67, 1.74 |
Technological Highlights: Premium Monomers and Coating Integrity
- High-Purity Monomer Selection: Monomers infused with specialized 420nm absorbers.
- Precision Liquid Casting Process: Uniform absorption across the entire lens volume.
- Advanced Vacuum Multi-Coating (SHMC): Optimized for low-reflectance and high transparency.
- Thermal Curing Optimization: Long curing cycles to ensure monomer-absorber stability.
- Integrated Peripheral Defocus Geometry: Compatible with all modern optical geometries.
Application
- Preventative care for patients at risk of AMD
- Daily use for children and young adults
- Users working under intense indoor lighting
- General-purpose eyewear with enhanced health benefits
Advantage
- Blocks more harmful light than standard UV400 lenses
- Permanent protection that cannot be scratched or worn off
- Maintains high aesthetic clarity without heavy yellow tinting
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Customization
Customized For Your
Business
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Complete Customization Capability
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Professional Lens Architecture
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Functional Coating Customization
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Digital Rx Customization
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Branding & Packaging
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Delivery & Support
Frequently Asked Questions (FAQ)
- Q: How is UV420 different from UV400?
- A: It blocks an extra 20nm of high-energy blue-violet light.
- Q: Is the lens yellow?
- A: No, it is engineered to be as clear as a standard lens.
- Q: Is the protection in the coating?
- A: No, it is built into the lens material itself.
- Q: Is this good for computers?
- A: Yes, it provides excellent protection from digital screen HEV light.
- Q: Can I use this for my child?
- A: Highly recommended for protecting young, developing retinas.
- Q: Does it have a blue reflection?
- A: Depending on the AR coating, it usually has a subtle, premium look.
- Q: Is it available in 1.74?
- A: Yes, we offer UV420 across all major indices.
- Q: Does it block "good" blue light?
- A: No, it allows beneficial blue-turquoise light (above 450nm) to pass.
- Q: Do I need a doctor's prescription?
- A: It can be made with or without a prescription.
- Q: How does it help my long-term health?
- A: It reduces the light-induced oxidative stress on the macula.
Payment and Shipping Policy
- Payment: T/T, PayPal, L/C.
- Shipping: Global Express (FedEx/UPS) for quick delivery.
- Packaging: Individual tech-spec envelopes in standard cartons.
- Lead Time: 10-14 days for stock; 15-18 days for custom RX.
Comprehensive Business Information
| MOQ | 100 Pairs (Stock) / 10 Pairs (RX) |
| Lead Time | 10-15 Days |
| Packaging | Export-grade moisture-sealed packaging. |
| Certifications | FDA, CE, ISO9001. |
| Raw Materials | Retinal-Protective UV420 Monomer. |
| Customization | Can be combined with Anti-Fatigue or Progressive designs. |
