High-refractive lens also known as thin lenses, the refractive index of 1.70 or more generally, while the ordinary refractive index of the lens in between 1.49-1.53​​.

Ordinary lens with high refractive index lens refraction in the same conditions than the curvature of the lens to be lighter, thinner lenses 1 / 5, high-refraction lens particularly suitable for those who wear high refractive errors.

Because a high refractive index coated lenses is not only light transmittance, high-definition but also to reduce the mirror vortex of a circle marks the refractive errors depending on the material to reduce eye fatigue, to see objects more realistic, in appearance more beautiful.

High-refraction lens spectacle lens is thin Yeah, something like this. Is not suitable for people with high degrees of high refractive index lens with it? Or all are suitable for you? The price of this lens is usually how much? Will increase with the degree, the price will increase? Thank you, ah!