Factory Finished Cr-39 1.56 Blue Cut Hmc Blue Blocker Optical Lens

• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Age Group: Adults
• Gender: Unisex
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Suitable for Face: All Face
• Material: Plastic
• Type: Aspherical Lens
• Coating: HMC
• Lenses Color: Clear
• Specific Gravity: 1.28
• Abrasion Resistance: 6~8h
• Diameter: 65/70
• Transmission: 98~99%
• Transport Package: Carton
• Trademark: OEM
• Origin: China
• HS Code: 90015099
• Production Capacity: 1000000/Pieces/Year
• Package Size: 50.00cm * 33.00cm * 41.00cm
• Package Gross Weight: 15.000kg

Product Description

What is Blue Light?

As we now live in the digital era, the issue of high-energy visible (HEV) Light wavelengths emitted from backlit displays is of concern to eye care providers, specifically the impact of overexposure to blue light on long-term vision health.

Light that appears white can have a large blue light component, exposing the eye to hidden spikes in intensity at wavelengths within the blue portion of the spectrum. These wavelengths range from 380 to 500 nanometers (nm). The band of blue-violet light considered potentially most harmful to retinal cells ranges from 415 to 455 nm. Some of the most favored digital devices and modern lighting-Such as light -emitting diode (LED) lights and compact fluorescent lamps (CFLs) that have replaced most incandescent lights - can emit a high level of blue light, typically in the wavelength starting at 400nm.

Over time, eyes are exposed to various sources of the blue light. Emerging research suggests that this cumulative and constant exposure to blue light can damage retinal cells. This slow degradation could lead to long-term vision problems. Such as age-related macular degeneration  (AMD) and cataracts.

The retina, which is responsible for processing intensity of light and color, cannot regenerate or be replaced if damaged. Once damage has occurred, the eyes are left increasingly exposed to blue light and other harmful environment factors, increasing the risk for long-term visual impairment.

While high levels of blue light might be detrimental to eye, it is also has benefits, including helping to establish the natural circadian rhythms in the human body and aiding cognitive functions such as alertness , memory and emotion regulation. While blue light is unavoidable. It is important to understand how it impacts eyes and bodies and to know tools and tips for limiting exposure when necessary.
  

  

Our Factory:
 

WDO (WEIHAI DINGXIN OPTICAL) is one of the most Potential Finished and Semi-Finished Optical Lenses factory located in Weihai City, China. It was establish in 1998 with covering 24400 spm and 280 employees. The annual production and sales of lenses are 30 million pieces, and the annual sales have exceeded 100 million for five consecutive years.
 

Our Key & Advantage Products:

Single Vision Lens:CR-39;1.56;1.60;1.67;1,74

Bifocal Lens: CR-39; 1.56;1.60

Progressive Lens: CR-39; 1.56; 1.60

Functional Lens: Blue Cut, Photochromic; Photomagic +UV420cut, Polarized; Polycarbonate

RX Service: Free Form; Special Coating; Special Power Range
Optical Equipment;Frames

Packing & Shipping: