1.67 refractive index conventional coated lens

Applicable range:

Myopia: -3.00D to -8.00D (medium and high degree)

Hyperopia: +3.00D to +7.00D (medium and high degree)

Astigmatism: -1.00D to -4.00D (medium and high degree)

Thickness characteristics:
Thinner than 1.61 lenses, suitable for people with medium and high degrees, the edge thickness is significantly reduced, and the aesthetics is improved.

Abbe number: about 32-36
The Abbe number is low, the dispersion is slightly higher, but it is still within the acceptable range, suitable for people who have requirements for thickness.