Today, the editor summarizes and recommends the purchasing principles of the Best 1.56 Finish Photochromic Progressive Brown lens products: the key indicators in the color-changing performance are initial transmittance, fading speed, color-changing depth, and color-changing durability. In the fading process of the Best 1.56 Finish Photochromic Progressive Brown lens, the two indicators of fading speed and whether the initial state can be reached after fading are very important, which are the performance watershed.

Photochromic durability determines how durable the Best 1.56 Finish Photochromic Progressive Brown lens is, and good brands can maintain more than 90 percent of their performance for two years. If you value performance, please choose the Best 1.56 Finish Photochromic Progressive Brown lens products with the film change process of Dachang. The editor recommends Jiangsu Maat Optical Technology, which is a brand manufacturer with strong R&D strength.
In addition to the photochromic properties, other properties of the Best 1.56 Finish Photochromic Progressive Brown lens products can also be considered comprehensively. For example refractive index, appearance quality level, film characteristics, optical design, etc. If you need a cost-effective Best 1.56 Finish Photochromic Progressive Brown lens, you can consider low-refractive index photochromic products, and then try to choose a professional brand.