SWISSBRAND Precision Lens Series
Crafted using point-by-point digital freeform calculation, tuned to the 1/100th diopter for pristine optical performance.
Swiss HD™ Single Vision
Engineered with computer-calculated aspheric geometry for edge-to-edge optical sharpness and up to 45% thinner profiles in high prescriptions.
Swiss BlueShield™ Tech
Formulated with monomer-embedded HEV 420nm filtration for software engineers, traders, and heavy screen users without yellowish tinting.
Freeform Progressive Pro™
Corridor-optimized digital multifocal technology for seamless distance, intermediate dashboard, and near reading transitions with zero swim effect.
Swiss Precision Lens Index Matrix
Select the ideal refractive index and specialized protective treatments for your power and lifestyle.
| Lens Index & Type | Recommended Power Range | Thickness & Weight | Ideal Frame Pairing | Key Features |
|---|---|---|---|---|
| 1.50 Standard Optical | Plano to ±2.00 | Standard Profile | Full-Rim Acetate & Metal | High optical clarity, cost-effective baseline. |
| 1.56 Mid-Index Slim | ±2.00 to ±4.00 | 20% Thinner than standard | Full-Rim & Semi-Rimless | Enhanced UV block and lightweight balance. |
| 1.60 High-Index HD | ±3.00 to ±6.00 | 30% Thinner & 25% Lighter | Rimless, Titanium, Designer Wire | High tensile strength, prevents chipping in grooved/drill frames. |
| 1.67 Ultra High-Index | ±5.00 to ±9.00 | 45% Thinner profile | Minimalist & Luxury Frames | Eliminates the "thick bottle-bottom" edge distortion. |
| 1.74 Maximum Aspheric | ±8.00 and above | Ultra-flat, thinnest possible | Any Luxury Frame | Maximum aesthetic appeal with minimal eye magnification or reduction. |
Interactive Lens Recommendation Guide
Click your primary visual requirement to view our optical recommendation:
Swiss BlueShield™ Pro + Diamond-Coat™ AR
Engineered with integrated selective blue-light filtration and accommodative power boost in the lower zone. Relieves micro-muscular strain while viewing digital screens all day without heavy yellow tinting.
Frequently Asked Questions
Expert guidance from Master Optician Mitesh Gandhi at K Win Optics Mumbai.
What is the difference between 1.60, 1.67, and 1.74 high-index lenses?
The index number refers to the refractive efficiency of the lens resin. Higher index lenses (1.67 and 1.74) bend light faster, allowing the lens to be up to 45% thinner and significantly lighter for moderate to high power prescriptions (above -3.00 or +3.00), preventing edge thickness and unnatural eye magnification.
How do Swiss BlueShield™ lenses differ from regular blue cut glasses?
Standard blue cut lenses rely on cheap blue-reflective coatings that reflect intense purple glare and introduce a heavy yellow tint. Swiss BlueShield™ integrates monomer-embedded HEV 420nm filtration inside the optical core, preserving natural color rendering while filtering high-energy blue-violet spikes from laptops and smartphones.
Can I visit K Win Optics in Andheri East, Mumbai for lens testing and fitting?
Yes! Master Optician Mitesh Gandhi conducts comprehensive digital pupillary distance (PD) measurements, progressive corridor alignments, and ocular centering at our flagship studio: B23, Shankar Puri Building, Old Nagardas Road, Opp. Municipal School, Andheri East, Mumbai 400069. Walk-ins and appointments are welcome.
How long does it take to adapt to digital freeform progressive lenses?
Most patients adapt within 24 to 72 hours. Our computerized wavefront freeform customization creates wide optical viewing zones with smooth corridors, eliminating the disorienting "swim effect" common in legacy bifocals and older progressive designs.