This is a special lens that can effectively filter out high-energy blue light from screens, electronic devices and lighting. This blue light usually comes from electronic devices (such as computers, mobile phones, tablets, etc.) and LED lights. Long-term exposure to these blue lights may have adverse effects on the eyes, such as eye fatigue, blurred vision, dry eye symptoms, decreased sleep quality, etc.
Lenses Material: Resin 
Lenses Color: Clear
Abbe Value: 58
Diameter: 65/70/72/75mm
Coating: UC/HC/HMC+EMI,SHMC
Logo:  Accept fog mark and laser mark on the lenses
Packing Envelope: White and Color customized envelope

This is a single lens which is the most common type of lens. A single vision lens has only one uniform prescription across the entire lens and corrects vision only at one distance. Single vision lenses can improve myopia or hyperopia, as well as correct astigmatism, providing a clear visual experience from near to far.
Lenses Material: NK55 
Lenses Color: Clear
Abbe Value: 58
Diameter: 65/70/75mm
Coating: HC/HCT/HMC+EMI,SHMC
Logo:  Accept fog mark and laser mark on the lenses
Packing Envelope: White and Color customized envelope