Lens Designs
Single Vision Lenses
One prescription power throughout the lens.
Products & services
Precision Lens Solutions
for Better Vision
Explore our range of optical lens designs, materials, and specialized coatings for diverse vision correction needs.
Category 01
Lens designs
How the prescription is laid out across the lens.
Lens Designs
Bifocal Lenses
Two distinct prescription zones, usually distance and near.
Lens Designs
Progressive Lenses (Multifocal)
A gradual transition between distance, intermediate and near.
Lens Designs
Lenticular Lenses (High Plus / High Minus)
Specialised designs for selected very high prescriptions.
Category 02
Lens materials
What the lens is made from, affecting weight, thickness and durability.
Lens Materials
CR-39 Standard Plastic
Good optical clarity, lightweight and affordable.
Lens Materials
Mineral Glass
Good optical clarity and surface scratch resistance.
Lens Materials
Polycarbonate
Lightweight and impact-resistant.
Lens Materials
Trivex
Lightweight, impact-resistant, good optical quality.
Lens Materials
High-Index (1.61 / 1.67 / 1.74)
Thinner lenses for stronger prescriptions.
Category 03
Coatings & special features
Treatments and functions added to a lens design and material.
Coatings & Special Features
Hard Coating (HC)
Helps resist everyday surface scratches.
Coatings & Special Features
Anti-Reflective (ARC / HMC)
Reduces reflections from lens surfaces.
Coatings & Special Features
Blue Cut / Blue-Filtering
Filters some wavelengths of blue light.
Coatings & Special Features
Photochromic Lenses
Darken in suitable UV exposure, clear again indoors.
Coatings & Special Features
Tinted Lenses
Grey, brown, green and other tints for comfort or style.
Coatings & Special Features
Night-Driving Lenses
Product-dependent glare management for driving comfort.
Coatings & Special Features
Polarized Lenses
Reduce reflected glare from roads and water.
Designs, materials and coatings are separate choices. Compatible features can sometimes be combined in one lens, depending on the product and prescription. Items are lens options to enquire about; availability is confirmed per order.
Compare
Lens materials at a glance.
General characteristics. The right choice depends on the prescription, frame and wearer.
| Material | Key Advantages | Considerations | Typical Applications |
|---|---|---|---|
| CR-39 | Good optical clarity, lightweight, affordable | Thicker for strong prescriptions; lower impact resistance than polycarbonate or Trivex | Everyday prescription eyewear |
| Mineral glass | Good optical clarity, surface scratch resistance | Heavier; more susceptible to breakage | Selected prescriptions where scratch resistance is a priority |
| Polycarbonate | Lightweight, highly impact-resistant | Softer surface usually needs a hard coat | Children's eyewear, selected safety and sports use |
| Trivex | Lightweight, impact-resistant, good optical quality | Not as thin as high-index for strong prescriptions | Everyday and active-use eyewear |
| High-index (1.61 / 1.67 / 1.74) | Thinner lenses for stronger prescriptions | Final thickness depends on prescription, frame and design; AR coating usually recommended | Moderate to strong prescriptions |
Our services
What we do for
optical businesses.
Seven core services, from spectacle preparation to technical support.
01
Prescription spectacle preparation
Precision-focused spectacle preparation tailored to individual optical prescriptions, for accurate vision correction and comfort.
02
Lens edging & precision fitting
Accurate edging, grooving and fitting of single vision, bifocal and progressive lenses for a wide range of frame types and materials.
03
Lens mounting & frame assembly
Professional mounting of lenses and seamless assembly of prescription eyewear to high optical standards.
04
Spectacle adjustments & frame maintenance
Frame care and alignment for long-lasting comfort and correct optical positioning.
- Frame alignment & reshaping
- Temple, bridge & nose pad adjustments
- Frame tightening & comfort fitting
- Lens alignment & realignment
- Screw & nose pad replacement
- Rim & rimless frame repairs
- Lens replacement services
- General spectacle maintenance
05
Quality inspection & finishing
Multi-point quality checks and precision finishing to maintain optical clarity and durability.
06
Custom optical solutions
Tailored edging and fitting solutions for complex or non-standard prescription requirements.
07
Support for optical practitioners
Reliable B2B laboratory services, fast turnaround and technical assistance for optical stores, optometrists and eye care professionals.
Capabilities
Under one roof.
Express & priority processing
Urgent orders are prioritised with rapid processing, without compromising on precision.
Wide lens selection
We work with lens types available in Sri Lanka and keep imported lenses, frames and spare parts in stock.
Precision lens processing
Single vision, freeform progressive and high-index lenses.
Advanced edging & fitting
Computerised cutting and mounting for all frame types, including rimless and half-rim (nylor) frames, using drilling and grooving machinery.
Coatings & tinting
Blue-cut, photochromic and AR-coated lenses, plus personalised custom tinting.
Ultrasonic cleaning
Deep cleaning of spectacles as part of our repair and maintenance service.
From our laboratory
The process, in pictures.
Questions
Frequently asked.
Who do you work with?
Optical stores, optometrists, eye care professionals and individual clients, across Sri Lanka.
Can you handle urgent orders?
Yes. We prioritise urgent orders with rapid processing times, without compromising on precision.
Which frame types can you fit?
All frame types, including rimless and half-rim (nylor) frames, using drilling and grooving machinery.
Which lenses do you process?
Single vision, bifocal, freeform progressive and high-index lenses, plus blue-cut, photochromic, AR-coated and custom-tinted options.
What are your working hours?
07:30 AM – 06:30 PM. Our team is available throughout working hours for technical support.
Find the Right Lens Solution for Your Business
Contact Rathnayaka Fitters to discuss available lens options, specifications, laboratory processing, and technical support.