Name: Factory Top Selling 1.56 Round Top HMC Hard Multi Coating Eyeglasses Lenses
Brand: Crystal Optical Co.,Ltd.
Price: 20 USD
Rating: 4.4 (5 reviews)

Factory Top Selling 1.56 Round Top HMC Hard Multi Coating Eyeglasses Lenses

The Round Top bifocal lens is a specially designed eyeglass lens characterized by a slightly curved dome design at the upper part of the lens ‌. This design provides a wider field of view and is especially suitable for people who need to observe distant and near objects frequently., and the dividing line is not obvious, so it is beautiful and comfortable.

Features of Factory Top Selling 1.56 Round Top HMC Hard Multi Coating Eyeglasses Lenses

1. Design features

No obvious dividing line: A notable feature of round bifocals is that the dividing line between the two different luminosity regions above and below is not obvious, which makes the lens more beautiful in appearance.

Arc structure: This design helps to improve the stability and comfort of the lens.

2. Functional features

Double correction function: Round Top bifocals can achieve double correction of farsightedness and nearsightedness on a single lens, providing great convenience.

3.Hard layer and waterproof layer:

Outside the wear-resistant strengthening layer, hard layer and waterproof layer will be added to further improve the hardness and waterproof performance of the lens

Specification of Factory Top Selling 1.56 Round Top HMC Hard Multi Coating Eyeglasses Lenses

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Index	1.523
Material	NK55
Diameter	70/28mm
Power Range	SPH -6.00~ +6.00
ADD	0~ +3.00
Abbe Value	33.8
coating	HC/HMC/SHMC
Coating clour	green
Design	Round Top

Advantages of Factory Top Selling 1.56 Round Top HMC Hard Multi Coating Eyeglasses Lenses

The difference between round top bifocals and flat-top bifocals in the method of determining the machining reference line and the apex of the sub-lens, as well as the suitable eye distance. The difference between the invisible bifocal and the other two is its appearance, the invisible bifocal fuses the small lens in the large lens, and there is no obvious boundary between the size of the lens, which does not affect the appearance. However, this design will also lead to the inevitable phenomenon of image jump and image defect.