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1.56 Progressive Lens Blue Cut Green Coating Optical Lens - High-Definition from China Suppliers & Factory
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
Q: What is the main difference between progressive lenses and bifocal lenses?
Progressive lenses are developed based on bifocal lenses but feature a gradual, polished transition between the upper and lower focal lengths. Unlike bifocals, there is no visible dividing line, which eliminates constant focal adjustment fatigue.
Q: Why are 1.56 progressive anti-blue lenses recommended?
The 1.56 refractive index makes the lenses relatively thin and lightweight, ideal for mild to moderate prescription needs. They combine the multi-focal convenience of progressive lenses with a protective anti-blue light coating to reduce digital eye strain.
Q: Who should wear progressive anti-blue light lenses?
They are highly suitable for individuals with presbyopia who need to correct both near and far vision, office workers or students who use digital screens for long periods, and anyone looking to protect their eyes from harmful blue light.
Q: What are the key advantages of using progressive lenses?
Progressive lenses offer versatility by correcting vision and filtering blue light simultaneously. They provide great convenience by eliminating the need to swap between different glasses for reading and distance viewing, which reduces overall eye fatigue.
Q: Is there an adaptation period for first-time progressive lens users?
Yes, first-time users may experience a brief adjustment period as the eyes adapt to the transition zones and the peripheral interference areas on the sides of the lenses. Professional optometry and correct prescription fitting are highly recommended to ease this process.