Product Description

What’s the Difference Between 1.67 and 1.74 High-Index Lenses?

1.74 high-index lenses are up to 10% thinner than 1.67 high-index lenses. Both have a high index of refraction and can accommodate strong prescriptions, but 1.74 high-index lenses are for especially strong ones: +/-8.00 or higher.

What Are the Advantages of High-Index Lenses?

• They’re thinner, lighter, and less obtrusive within frames, unlike thicker lenses that may protrude outwards. Lower-index lenses can also magnify or shrink the appearance of your eyes, which is not as much of a risk with high-index lenses. .
• They’re versatile. High-index lenses can be single-vision, progressive, and even light-responsive. You can also opt for high-index lenses that filter blue light, and if you’re getting sunglasses, polarized high-index lenses are an option, too. No matter how you’d like to customize your prescription lenses, it’s a good bet that high-index lenses can play along.
• They fit most frames. Your choice of frames won’t be restricted by high-index lenses: Their thin profile enables them to work with many frame styles if you have a higher prescription. (We recommend choosing a frame that centers your eyes behind each lens to reduce the thickness of your lenses. The stronger your prescription, the more important this is! Bigger frames = thicker lenses, regardless of the refractive index.)
• They’re comfortable. High-index lenses won’t sit heavy on your nose and ears, and they’re at less risk of sliding down than thicker lenses.

Are High-Index Lenses Worth It?

So: Should you get high index lenses? If their aesthetics appeal to you, high-index lenses are a great way to get the thinnest lenses for a high prescription. When compared to lenses with a lower index of refraction, their benefits outweigh the bump in cost for many wearers.

Interested? Check with your eye doctor or optician, and see if high-index lenses are right for you.

Production Flow Chart

Detailed Images

What Blue Block Lenses by Convox Actually Do？

1) Blue cut lenses protect your eyes from the harmful effects of blue light caused by prolonged working hours on a computer, laptop or mobile. 

2) Lower risk of certain types of cancer. 

3) Lower risk of Diabetes, Heart Disease & Obesity. 

4) Make you feel engertic when you finish the long time working before the computer. 

5)Make your eyes turn tried slowly.

Product Feature

Packaging & Delivery

Packaging Details
Finish Lens Packing:
Envelops packing (For choice):
1)standard white envelops
2)OEM with customer’s LOGO, have MOQ requirement
Cartons:
Standard cartons:50CM*45CM*33CM(Every carton can include around 500 pairs lens,21KG/CARTON)
Port Shanghai
Picture Example:

About Us

Certificate

Exhibition

Our Products Testing

Quality Checking Procedure

FAQ