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1.56 Progressive Blue Cut Green Coating Optical Lens - High Definition from China Suppliers and Factory for Eye Protection
Historical Background
Progressive lenses are developed on the basis of bifocal lenses. The use rate in Europe and the United States is relatively high, and the time of matching in China is nearly 10 years. The progressive piece is in the transition of the upper and lower two focal lengths, the use of polishing technology, the gradual transition between the two focal lengths, that is, the so-called gradual, it can be said that the progressive lens is a multi-focal length lens.
When the wearer observes far/near objects, in addition to not having to remove the glasses, the movement of sight between the upper and lower focal lengths is also progressive, there is no dual-focal length when the eye must constantly adjust the focal length fatigue, and there is no obvious dividing line between the two focal lengths. The disadvantage is that there are different degrees of interference areas on both sides of the progressive film, which will cause the peripheral visual field to produce swimming motion.
Characteristic
1.56 Main features of progressive anti-blue lens:
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1.56 refractive index lens: Suitable for mild to moderate myopia or farsightedness patients, the lens is relatively thin and lightweight.
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Progressive design: Provides different degrees from top to bottom, suitable for presbyopia patients, and can see far, middle and near objects at the same time, without frequent replacement of glasses.
The lens has an anti-blue light coating, which can effectively filter the harmful blue light emitted by electronic devices, reduce eye fatigue and dryness, and protect the retina.
Applicable population
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People who use electronic devices for a long time: such as office workers, students, etc.
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Presbyopia: People who need to correct both farsightedness and nearsightedness.
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Eye health: People who want to reduce the damage blue light does to their eyes.
Advantage and Precautions
Advantage:
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Versatile: corrects vision and protects blue light at the same time.
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Convenience: Progressive design eliminates the need for frequent mirror changes.
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Comfort: reduce the fatigue of the eyes for a long time.
Matters needing attention:
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Adjustment period: The first use of progressive lenses may take time to get used to.
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Professional optometry: It is recommended to take optometry in a professional institution to ensure the accuracy of the degree.
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Lens care: Clean regularly to maintain anti-blue light effect.
Progressive lenses are a powerful and beautiful vision tool for people who need multi-focal correction.
Frequently Asked Questions
What is a progressive lens?
A progressive lens is a multi-focal length lens developed on the basis of bifocal lenses. It uses polishing technology to create a gradual transition between the upper and lower focal lengths, allowing the wearer to see far, middle, and near objects without an obvious dividing line.
What are the benefits of the 1.56 refractive index in these lenses?
The 1.56 refractive index makes the lens relatively thin and lightweight, making it suitable for patients with mild to moderate myopia (nearsightedness) or farsightedness.
Who should wear progressive anti-blue lenses?
They are ideal for people who use electronic devices for a long time (such as office workers and students), presbyopia patients who need correction for both farsightedness and nearsightedness, and anyone wanting to protect their eyes from blue light damage.
How does the anti-blue light coating protect the eyes?
The anti-blue light coating effectively filters harmful blue light emitted by digital screens, which helps reduce eye fatigue, dryness, and protects the retina.
Are there any disadvantages or precautions to keep in mind?
Yes, progressive lenses have interference areas on both sides that can cause peripheral swim motion. First-time wearers will require an adjustment period. It is also important to get a professional eye exam for accuracy and to clean the lenses regularly to maintain the anti-blue light effect.