Grade A vs. Non-Grade A Lenses: What’s the Difference?

Many customers ask us about the difference between Grade A and Non-Grade A trial lenses in our store. To provide clarity, we’ve taken the time to write this blog post, explaining the key distinctions in accuracy, manufacturing, and packaging.

1. Accuracy Standards

One of the biggest distinctions between Grade A and Non-Grade A lenses is their accuracy in spherical power.

• Non-Grade A Lenses:
  • Spherical power tolerance: ±0.15D
  • May have minor cosmetic imperfections (small scratches or stains) that do not affect performance
• Grade A Lenses:
  • Meets stricter tolerance standards (see chart below)
  • Designed for high-precision applications with minimal deviations

📌 Reference Chart:

2. Manufacturing Differences

Production Quality

• The two kinds of lenses use different raw materials.
• The processing process of Grade-A  lenses is more automatic  than that of non-Grade-A lenses. So the details of the Grade-A lenses are better handled.

Cleaning Process

• Non-Grade A: Some smudges or stains may require careful wiping to achieve full clarity.
• Grade A: Requires only a light wipe to be clean and ready for use.

3. Packaging Differences

• Grade A Lenses:
  • Packaged in wooden trays for enhanced durability.
  • Lined with red or white velvet, which cushions the lenses and absorbs shocks during transit.
• Non-Grade A Lenses:
  • Stored in custom plastic trays, with individual slots to keep each lens in place.
  • While designed for protection, plastic holders are more susceptible to damage during rough handling or heavy impacts in transit.

Key Advantages at a Glance

Conclusion

If you prioritize precision, durability, and a premium experience, Grade A lenses are the superior choice. However, if you're looking for a budget-friendly option and don't mind minor imperfections, Non-Grade A lenses still offer reliable performance.

No matter which you choose, understanding the differences can help you make the best decision for your needs.