1.56 Progressive Green Coating Finished Lens

1. Refractive Index & Material    
With a refractive index of 1.56, this lens falls into the medium refractive index category. It balances optical performance while keeping the lens thickness and weight at a reasonable level. Made of resin, the lens offers advantages such as light weight and excellent impact resistance, ensuring more comfortable and safe wearing.

2. Progressive Multifocal Design    
The power on the lens surface gradually transitions from the distance vision zone to the near vision zone. This design provides wearers with clear vision correction for far, intermediate, and near distances. Unlike bifocal or trifocal lenses—where wearers need to frequently shift their visual focus when looking at objects at different distances—this progressive design eliminates the "image jump" phenomenon, enabling smooth visual transition. It is ideal for middle-aged and elderly people, as well as those who need to switch between far and near vision frequently.

3. Features of Green Coating    
Green coating typically adopts HMC (Hard Multi-Coating). This coating has high hardness, which can effectively resist scratches and extend the lens service life. Meanwhile, the green coating reduces light reflection on the lens surface, improves light transmittance for clearer vision, and effectively blocks ultraviolet (UV) rays to protect the eyes from UV damage.