1.56 Progressive Blue Cut Green Coating Optical Lenses from China Suppliers | High-Definition Factory Quality
Historical Background
Progressive lenses are developed on the basis of bifocal lenses. The use rate in Europe and the United States is relatively high, and the time of matching in China is nearly 10 years. The progressive piece is in the transition of the upper and lower two focal lengths, the use of polishing technology, the gradual transition between the two focal lengths, that is, the so-called gradual, it can be said that the progressive lens is a multi-focal length lens.
When the wearer observes far/near objects, in addition to not having to remove the glasses, the movement of sight between the upper and lower focal lengths is also progressive, there is no dual-focal length when the eye must constantly adjust the focal length fatigue, and there is no obvious dividing line between the two focal lengths.
Note: The disadvantage is that there are different degrees of interference areas on both sides of the progressive film, which will cause the peripheral visual field to produce swimming motion.
Characteristic
The lens has an anti-blue light coating, which can effectively filter the harmful blue light emitted by electronic devices, reduce eye fatigue and dryness, and protect the retina.
Applicable Population
Advantage & Precautions
Progressive lenses are a powerful and beautiful vision tool for people who need multi-focal correction.