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Our products are standardized lenses and customized lenses according to refractive index.
1.74 High-Index LensSeries
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Conant 1.74 high index series uses MR-174™ raw materials from Japan’s Mitsui Chemicals,which is a super high index and light lens material.Its excellent optical performance allows users to experience comfort and lightness,at the same time it improves color reproduction and clarity.

Comparison of lens thickness of 1.50 1.60 1.74 under the same degree
Lighter and more comfortable

Lighter and more Ultra high index bio-friendly lens material for super thin lenses.Recommended especially for higher prescriptions 43% thinner and 32% lighter than organic 1.50 material.


Lens support adding UV++,D-free,tinting,photochromic and other functions.It can be designed and combined to meet various needs.

Derived from plants

1.74 is a super high index lens made from plant-derived materials.This plant-derived lens material offers performance equivalent to conventional petroleum-derived products.


Helps reduce CO2 emissions
JORA and USDA certified biomass products
Product manufacture generates 14% less greenhouse gas emissions than conventional petroleum-derived materials