Because it has many varieties, so I will briefly talk about it.
Monofocal lens
The lowest is that both the white crystal (the only one without film) and the blue crystal (the one with film) are PC chips-good impact resistance, but not resistant to film.
Next, the diamond crystal Zhijie series ranges from 1.502 to 1.665.
Recently, a new diamond A2 film has been developed. The biggest difference between this film and Diamond Zhijie is that A2 has higher antistatic property.
The color of eTV changes to single focus and multi-focus (that is, adult gradient). Generally, it takes tens of seconds to see ultraviolet rays from outdoors to change color (it seems that it takes less than one minute, I can't remember the details). Generally, it takes about 65,438+00 minutes for the color to fade completely, which is still very fast.
Multi-point lens of Etro (adult)
Freestyle-Comfort-Wisdom-Wisdom 360
Freestyle is the lowest, and so on. The higher you go, the better you adapt. These types are also refractive index and discoloration.
Forever student progressive film is a kind of orchid film progressive film for good students.
Because the lens of eVision is designed according to the physiology of human eyeball, other lenses will have some adaptation to eVision, but once they are adapted, it will be uncomfortable to change to other lenses.
In addition to blue crystal and white crystal, eTV's lenses are marked with anti-counterfeiting marks. A clean lens can tell in one breath that most of eTV films are yellow-green.
As for Essilor's domestic factory in Songjiang, Shanghai, his lenses are not all produced in one place, but in different varieties and different places of origin.
I don't have much contact with the hyperopia lenses of Essilor, so I can't tell you anything.
Generally speaking, the lenses are good. Its new slogan is to sell one piece around the world every second.