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BONA High quality 1.56 flat top bifocal HMC blue cut lens optical lens eyewear lens eyeglasses lenses
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Homelife
China - Hangzhou
Trading Company
Trade Capacity
Export Percentage
Nearest Port
ningbo
Accepted Delivery Terms
Employees
201-300 people
Accepted Payment Currency
USD
Average Lead Time
15 Day(s)
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Product Specifications
--Product Description
Why Choose Us
Products Description
Index | Diameter | Monomer | |
1.56 | 72 MM | NK55 | |
Abbe Value | Specific Gravity | Transmission | |
42 | 1.15 | > 98% | |
UV Value | Power Range | ||
420 | SPH: +3.00~-2.00 | ADD:+100~+300 | |
Feature
1. UV 420 Blue Cut Lenses
♦ What is Blue Light?
Blue light is not light which looks blue, it is a light which wavelength from 400-500,it create more damage to people's than
another light.
1. UV 420 Blue Cut Lenses
♦ What is Blue Light?
Blue light is not light which looks blue, it is a light which wavelength from 400-500,it create more damage to people's than
another light.
♦ The harm of blue light
The latest medical research has found that blue light (not ultraviolet) will cause Macular degeneration of retina and blindness if eye cells was exposed in the blue light for long time, the pigment molecules in cells would spur photo toxicity and make damages to cell, which is the main cause of blindness. Macular Degeneration is permanent damage and cannot be replaced.Blue light occupies most part of the visible light, whose short wave and high Energy stimulates eyes and causes photo and eyestrain, meanwhile the blue light bled into red blossoms and green leaves too much will also reduce the sharpness of color contrast.
♦ Blue Cut Lenses
Blue Cut Lens helps to protect your eyes against blue-violet light emitted by digital screens. Aogang Optics is offering different kinds of blue cut lens.
The latest medical research has found that blue light (not ultraviolet) will cause Macular degeneration of retina and blindness if eye cells was exposed in the blue light for long time, the pigment molecules in cells would spur photo toxicity and make damages to cell, which is the main cause of blindness. Macular Degeneration is permanent damage and cannot be replaced.Blue light occupies most part of the visible light, whose short wave and high Energy stimulates eyes and causes photo and eyestrain, meanwhile the blue light bled into red blossoms and green leaves too much will also reduce the sharpness of color contrast.
♦ Blue Cut Lenses
Blue Cut Lens helps to protect your eyes against blue-violet light emitted by digital screens. Aogang Optics is offering different kinds of blue cut lens.
A flat top bifocal lens is offers correction for both near and far distances. It is a multifocal lens commonly prescribed for
those suffering from both presbyopia and hypermetropia, a condition whereby, with age, the eye exhibits a progressively diminished ability to focus on near and far objects. The flat top lens includes a segment at the lower half of the lens with a prescription for reading (near distance). The width of the flat top 28 bifocal is 28mm wide at the top of the bifocal and looks like the Letter D turned 90 degrees.
those suffering from both presbyopia and hypermetropia, a condition whereby, with age, the eye exhibits a progressively diminished ability to focus on near and far objects. The flat top lens includes a segment at the lower half of the lens with a prescription for reading (near distance). The width of the flat top 28 bifocal is 28mm wide at the top of the bifocal and looks like the Letter D turned 90 degrees.
Hard Coated | Also can be called HC coating, is to enhance the hardness of the lens to prevent the substrate scratch |
Hard Multi Coated | Also can be called HMC or AR coating, is to protect the lens effectively from reflection, enhancing functional and charity of your vision |
Super hydrophobic Coated | Also can be called SHMC coating, is to make the lens waterproof, antistatic, anti slip and oil resistance |
Wet anti fog cloth
Ordinary dry cloth
70% dry anti fog cloth
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