1.56 Semi Finished Blue Cut Porgressive optical lenses

Short Description:

Multifocal glasses have short channels and long channels. The choice of channel is important. Generally, we first consider choosing the short channel, because the short channel will have a larger field of view, which is in line with the lifestyle of people who often look at their mobile phones. The difference between the eyes is relatively large, the eyes of the low rotation ability of the people, is also suitable for short channels. If the consumer is wearing multi-focus for the first time, has medium distance demand, and the Add is relatively high, then the long channel can be considered.

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Product Detail

Product Tags

Production Details

For progressive lenses, the larger the Add, the higher the astigmatism (especially oblique dispersion), and the stronger the astigmatism zone. Therefore, we should try to reduce the Add. Generally, Add below +1.50 has less astigmatism, small range and high comfort, and wearers around 50 years old have a short adaptation period. When Add is higher than +2.00, the wearer needs some time to adapt.

Place of Origin:	Jiangsu	Brand Name:	BORIS
Model Number:	Blue Cut Lens	Lenses Material:	CW-55
Vision Effect:	Progressive lens	Coating Film:	UC/HC/HMC/SHMC
Lenses Color:	White	Coating Color:	Green/Blue
Index:	1.56	Specific Gravity:	1.28
Certification:	CE/ISO9001	Abbe Value:	38
Diameter:	75/70mm	Design:	Crossbows and others

Production Introduction

External progressive design: the progressive degree change process is made on the front surface of the lens. Contrast sensitivity is low, and it works better for people with poor backrotation. High Add or short channel using external progressive effect is better, but the field of view is smaller.

Internal progressive design: The gradient is made on the inner surface of the lens. The astigmatic region is relatively small, low Add or long channel is more suitable for this design. You can think of the lens as a window. The closer you get to the window, the bigger the field of view.