07/09/2020
Top 3 Reasons to Use an Inspection Company
Top 3 Reasons to Use an Inspection Company
1. Production Process and Common Quality Issues for Eyewear
Click to review the detailed production process and common quality issues for eyewear.
2. Ensuring Eyewear Safety & Compliance with Laboratory Testing
We arrange laboratory testing to confirm adherence to international safety and performance standards:
- EN ISO 12312-1 (Sunglasses and related Eyewear)
- ANSI Z80.3 (Nonprescription Sunglasses and Fashion Eyewear)
- REACH (Chemical Safety Compliance)
- RoHS (Restriction of Hazardous Substances)
- CPSIA (Consumer Product Safety Improvement Act for children's Eyewear)
- ASTM F801 (Impact Resistance for Protective Eyewear)
- EN 166 (Personal Eye-Protection)
- California Proposition 65 (Harmful Substances)
3. Common Defects in Eyewear Inspections
Optical & Lens Defects
- Scratches or abrasions/scuffs on lenses
- Distortion or optical imperfections
- Incorrect prescription power
- Uncentered optical axis
- Bubbles or inclusions in lens material
Structural & Material Defects
- Loose, misaligned or stiff hinges
- Bent, deformed or deformed frames
- Cracks, fractures or brittle frames
- Poorly fitted or faulty nose pads
- Rough edges or sharp burrs on frames
- Incorrect material composition
Cosmetic & Appearance Defects
- Discoloration, uneven coating or inconsistent finish
- Color inconsistencies or uneven texture
- Foreign particles embedded in material
- Peeling paint or plating
- Visible glue residue
- Scratches or scuffs on frames
Functional & Assembly Issues
- Temples not folding correctly or misaligned temples
- Screws loose or missing
- Poor lens retention
- Uncomfortable fit or imbalanced weight
- Incorrect frame size
- Difficulty in lens insertion/removal (for interchangeable lenses)
Packaging & Labeling Issues
- Incorrect prescription labels or missing/incorrect labels
- Missing or illegible markings
- Damaged or inappropriate packaging
- Missing accessories (e.g., cleaning cloth, case)
- Incorrect barcode or product information
4. Which Eyewear Products Do We Have the Most Experience With?
Fashion Eyewear
- Sunglasses (plastic, metal, acetate)
- Prescription Eyeglasses (frames only)
- Blue Light Blocking Glasses
- Reading Glasses
Protective Eyewear
- Safety Glasses
- Sports Goggles
- Welding Goggles
- Medical Face Shields
Specialty Eyewear
- Children's Eyewear
- Ski Goggles
- Virtual Reality Headsets (Eyewear component)
- Magnifying Glasses
5. Our Eyewear Quality Control Services
Product Inspection
On-site inspections verify eyewear quality, function, and craftsmanship.
Supplier Audits
Pre-production audits assess manufacturing capability and quality systems.
Laboratory Testing
Testing confirms compliance with international safety and performance standards.
Dimension Stability at Elevated Temperature Test
Drop Ball Test
6. How V-Trust Helps You Find the Right Eyewear Supplier
We conduct supplier audits to verify production capabilities and compliance before order placement.
Factory Audit
Quick verification of supplier legitimacy through:
- Factory existence and document verification
- Basic production capacity review
- Contact person verification
In-Depth Factory Audit
A comprehensive evaluation covering:
- Production capacity & facility assessment
- Quality control system evaluation
- Social compliance verification
7. How V-Trust Helps You Control the Quality of Eyewear
V-Trust offers comprehensive quality control solutions for Eyewear, including Sample Checks, Production Monitoring, During Production Inspection, Pre-Shipment Inspection, and Container Loading Supervision. Our expert services are designed to ensure your products meet stringent quality, safety, and compliance standards, giving you confidence in your supply chain.
Sample Check
Before mass production, our engineers meticulously evaluate Eyewear samples for design accuracy, material quality, lens clarity, UV protection, and overall structural integrity. This crucial step helps identify and rectify potential issues early, ensuring the approved sample accurately represents your desired product.
Production Monitoring
During the manufacturing process, V-Trust provides on-site monitoring to oversee critical stages such as frame molding, lens cutting, coating application, and assembly. This proactive approach helps detect and address issues like material defects, color variations, or assembly errors in real-time, maintaining consistent quality throughout production.
During Production Inspection
When at least 10% of your Eyewear order is completed, our inspectors conduct a detailed During Production Inspection. This mid-production check focuses on identifying early-stage defects such as scratches, misalignments, or functional issues with hinges and nose pads, allowing for timely corrective actions and minimizing rework.
Pre-Shipment Inspection
Before shipment, a thorough Pre-Shipment Inspection is performed on 80-100% finished and packed Eyewear. This final quality check verifies product specifications, cosmetic appearance, functional performance (e.g., hinge movement, lens retention), safety compliance, packaging integrity, and correct labeling, ensuring your order is ready for market.
Container Loading Supervision
V-Trust supervises the container loading process to ensure your Eyewear products are handled with care, correctly counted, and securely loaded. We verify that packaging is intact, cartons are properly stacked, and the container is sealed, preventing damage during transit and ensuring your goods arrive in perfect condition.
8. The Most Related Sourcing Fairs in Asia
March 2-4, 2026
China (Shanghai) International Optics Fair (SIOF)
Shanghai New International Expo Centre (SNIEC), Shanghai, ChinaShowcasing a comprehensive range of Eyewear products including spectacle frames, sunglasses, lenses, contact lenses, ophthalmic instruments, and manufacturing machinery.
https://www.siof.cn/
May 8-10, 2026
Wenzhou International Optics Fair (WOF)
Wenzhou International Convention & Exhibition Centre, Wenzhou, ChinaWOF is recognized as a must-attend optical trade show in Asia, serving as a strategic platform for importers and buyers worldwide.
https://www.opticsfair.com/
November 4-6, 2026
Hong Kong International Optical Fair (HKIOF)
Hong Kong Convention and Exhibition Centre, Hong KongOrganized by the HKTDC, this fair is a leading event in Asia for the optical industry.
https://www.hktdc.com/event/hkopticalfair/en
Why Choose V-Trust for Eyewear Quality Control?
20
Years of Experience
650+
Trained Inspectors
10
Asian Countries
13,000
Satisfied Clients
Asia's leading product inspection company with full-time, professionally trained inspectors and comprehensive accreditation for inspection, audit, and lab testing services.
Eyewear Quality Control: Frequently Asked Questions (FAQ)
Why do I need product inspections for eyewear?
If you are worried about or have experienced problems such as poor quality, incorrect shipments, or wrong packaging for goods imported from Asia, product inspection services is your solution. V-Trust product inspection service can help you have accurate understanding about the quality of the goods without going to the factory by yourself.
Do I need to send you an approved sample for eyewear?
It would be great if you can send the approved sample to V-Trust before the inspection for reference. Compared with product photos or specification documents, a real product sample allows V-Trust engineers to do a more thorough comparison check.
How many days in advance should I book the inspection?
Though sometimes it's possible to book next-day inspections for many manufacturing clusters where V-Trust has a large team of full-time inspectors, we recommend booking with us at least three days in advance. Early booking is important for appropriate scheduling and good preparation before the inspection.
Who will I be in contact with throughout the whole process?
There will be one dedicated account manager who will be assigned as your main contact point at V-Trust. You will receive prompt responses whenever you have any questions regarding the inspection arrangement.
How long does it take to know the inspection result?
The official report, reviewed and signed by an authorized V-Trust technical manager, will be available within 24 hours after each inspection. Same day report is available if you would like to know about the inspection findings on the same day. V-Trust has the highest same day report rate in the inspection industry.
What if I have questions after I check my V-Trust report?
Please don’t hesitate to contact us whenever you have any questions. V-Trust team is always available even after the inspection is completed.
Request Your Inspection Today
Ready to ensure the quality of your products? Contact our team to discuss your specific requirements.