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Premium Progressive Multifocal Optical Lenses from China Suppliers and Factory for Clear Vision Solutions
Historical Background
The concept of progressive multifocal lenses was first proposed by Owen Aves in 1907, inspired by the shape of an elephant's nose. This type of lens has a high usage rate in Europe and America, and has gradually become popular in China in recent years.
Through the above description, we can comprehensively understand the definition, characteristics, usage methods, and historical background of progressive lenses, which can help us better choose and use this vision correction tool.
Characteristic
Multi focal design:
Progressive lenses have multiple focal points on the same lens, gradually changing from the far zone to the near zone, avoiding the obvious boundary lines of traditional bifocal lenses and reducing visual jumping and wearing discomfort.
High comfort:
The wearer does not need to frequently adjust the focal length, reducing visual fatigue and eye adjustment burden, and improving the comfort of wearing.
Wide applicability:
Suitable for people with vision problems such as farsightedness, myopia, and presbyopia, especially for middle-aged and elderly people over 40 years old, students who use their eyes for a long time, and white-collar workers.
Usage and Precautions
Adaptation period:
It may take about a week to adapt to wearing progressive lenses for the first time, during which you may feel dizzy. It is recommended to start with static activities and gradually transition to dynamic activities.
Correct use (Long distance zone):
When driving or looking, slightly retract your chin and keep your head level, looking through the center of the lens slightly higher.
Mid distance zone:
When viewing a computer screen, look slightly lower in the middle of the lens and adjust the neck position slightly until the image is clear.
Close range area:
When reading a newspaper, place it in front of you, slightly extend your chin forward, and adjust your gaze downward to the appropriate mirror area 4.
Avoid using blurry areas:
The areas on both sides of the lens are areas of varying brightness, and the field of view is relatively blurry. It is recommended to rotate the head and eyes as much as possible for clear viewing.
Frequently Asked Questions
What is the origin of progressive multifocal lenses?
The concept of progressive multifocal lenses was first proposed by Owen Aves in 1907. The innovative design was inspired by the unique shape of an elephant's nose.
What are the primary benefits of the multi-focal design?
Progressive lenses feature multiple focal points on a single lens that gradually shift from the far zone to the near zone. This eliminates the visible partition lines found in traditional bifocals, reducing visual jumping and wear discomfort.
Who is suitable to wear progressive lenses?
They are highly suitable for individuals with vision issues like farsightedness, myopia, and presbyopia. They are particularly beneficial for people over 40 years old, students who study for long hours, and white-collar professionals.
How long does it take to get used to progressive lenses?
First-time wearers typically require about a week to adapt. Dizziness may occur initially, so it is highly recommended to start with stationary tasks before moving on to active or dynamic movements.
How do I correctly look through the different zones of the lens?
Look through the upper part of the lens for distance viewing (driving), the middle part for intermediate distances (computer screens), and the lower part for close-up reading. Make minor chin adjustments to line up your focus.
Why is my peripheral vision blurry when wearing progressive lenses?
The outer edges on both sides of the lenses are astigmatism zones where the light power varies, causing natural distortion. To see clearly, turn your head toward the target rather than just moving your eyes sideways.