1.74 Lens Full name 1.74 refractive index lens, with high refractive index, high transmittance, high Abbe number characteristics, in the case of the same myopia degree, can significantly reduce the thickness of the lens, reduce the quality of the lens, while making the lens more pure and bright. 1.74 The lens adopts MR-174 material, which not only achieves high refractive index and abbe number, but also ensures good light transmittance, low dispersion and clearer vision. At the same strength, the 1.74 lens is thinner and comfortable to wear.