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Product Introduction
Introduction: The Pinnacle of Thin-Lens Engineering
For individuals with severe myopia, the burden of thick, heavy lenses can affect both self-confidence and physical comfort. Our 1.74 Ultra-High Index Myopia Lenses represent the absolute peak of resin lens technology. These lenses are engineered for prescriptions typically exceeding -6.00D, offering a reduction in thickness of up to 50% compared to standard 1.50 index lenses. By using the highest refractive index material available, we can produce lenses that are incredibly thin, lightweight, and flat.
Every 1.74 lens we produce features an advanced aspheric design. This not only makes the lens look better in the frame but also significantly reduces the peripheral distortion and "eye shrinkage" effect associated with high-minus prescriptions. Paired with our premium super-hydrophobic multi-coating, these lenses provide crystal-clear vision and a sophisticated aesthetic that makes high-prescription eyewear virtually indistinguishable from lower-power glasses.
Specification: 1.74 Technical Precision
| Refractive Index | 1.74 (Ultra-High) |
| Lens Design | Double Aspheric / Digital Freeform |
| Weight Reduction | Up to 50% vs. Standard Index |
| UV Protection | 100% UV400 Built-in |
| Abbe Value | 33 |
| Specific Gravity | 1.47 g/cm³ |
| Coating | SHMC Super-Hydrophobic + Anti-Reflective |
Technological Highlights: Premium Monomers and Coating Integrity
- High-Purity Monomer Selection: We exclusively use high-performance monomers (e.g., MR-series) to achieve superior tensile strength and optical purity, resulting in excellent clarity and minimal risk of yellowing over time.
- Precision Liquid Casting Process: The lenses are produced via a controlled liquid casting method that ensures uniform material density and refractive index consistency across the entire blank, which is critical for accurate therapeutic power zones.
- Advanced Vacuum Multi-Coating (SHMC): Coatings are applied in a high-vacuum chamber, using multiple layers of metallic oxides to create a durable, anti-reflective stack. This process guarantees maximum light transmission and minimal glare.
- Thermal Curing Optimization: A slow and precise thermal curing cycle is employed to maximize the material’s resistance to internal stress, ensuring the finished lens remains stable and optically perfect under varying temperature conditions.
- Integrated Peripheral Defocus Geometry: The therapeutic design is engineered into the mold itself for cast lenses, or applied via digital surfacing for semi-finished blanks, guaranteeing the accuracy and consistency of the myopia control zone geometry.
Application: High-Correction Vision Needs
- High Myopia Patients: Ideal for prescriptions from -6.00D to -15.00D or higher.
- Fashion-Conscious Wearers: Allows for a wider choice of thin-profile designer frames.
- Sensitive Bridge Users: Drastically reduces the weight of glasses on the nose.
- Professional Settings: Provides a natural eye appearance for meetings and public speaking.
- Full-Time Wearers: Maximizes comfort for those who wear glasses from morning to night.
Advantage: Slim, Light, and Precise
- Maximum Edge Thinness: The thinnest possible resin lens for high-minus powers.
- Enhanced Edge-to-Edge Vision: Aspheric design minimizes peripheral blurring.
- Natural Eye Appearance: Reduces the visual "minification" of the eyes.
- Premium Durability: Despite its thinness, the material is highly stable and scratch-resistant.
- All-In-One Protection: Includes UV400 and superior anti-glare as standard.
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Customization
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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: Is 1.74 the thinnest lens available?
- A: In the resin category, yes. It is the gold standard for high prescriptions.
- Q: Do these lenses make my eyes look small?
- A: They significantly reduce that effect compared to lower index lenses.
- Q: Are they more fragile because they are thin?
- A: No, the 1.74 material is very dense and durable.
- Q: Can I put 1.74 lenses in rimless frames?
- A: We generally recommend full-rim or semi-rimless for the best edge protection.
- Q: Do I need a special coating?
- A: We include our best SHMC coating because high-index lenses reflect more light.
- Q: What is the Abbe value of 1.74?
- A: It is 33, which provides excellent clarity for such a high index.
- Q: Can these be made with Blue Cut?
- A: Yes, we offer 1.74 Blue Cut options.
- Q: How much lighter are they?
- A: Typically 30-40% lighter than a standard 1.50 glass or resin lens.
- Q: Are they available as progressives?
- A: Yes, we can produce them in free-form progressive designs.
- Q: Is there a maximum power limit?
- A: We can stock up to -15.00D; custom orders can go even higher.
Payment and Shipping Policy
- Payment: T/T, L/C, or Western Union. 30% deposit for custom 1.74 batches.
- Shipping: Global express delivery. Extra-secure padding for thin-edge lenses.
- Packaging: Premium vacuum-sealed individual envelopes with index marking.
- Lead Time: 15-20 days due to specialized high-index casting and curing.
Comprehensive Business Information
| MOQ | 30 Pairs |
| Lead Time | 15-20 Days |
| Packaging | High-end serialized envelopes for authenticity. |
| Certifications | FDA, CE, ISO9001. |
| Raw Materials | Japanese High-Index Monomer (MR-174). |
| Customization | Aspheric or Double Aspheric digital design. |
