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Premium Progressive Series Optical Lens - Multifocal Vision Correction from China Suppliers and Factory
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.
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, inspired by the shape of an elephant's nose. Today, it is highly popular in Europe, America, and increasingly in China.
Why are progressive lenses more comfortable than traditional bifocals?
Progressive lenses feature multiple focal points on the same lens that gradually transition from far to near zones. This design eliminates the visible boundary lines found in traditional bifocals, reducing visual jumping and eye fatigue.
Who can benefit from wearing progressive lenses?
They are highly suitable for individuals with presbyopia, myopia, or farsightedness. They are particularly beneficial for adults over 40, students, and office workers who require frequent changes in focal distance.
How long does it take to adapt to new progressive lenses?
It typically takes about one week to fully adapt. First-time wearers may experience mild dizziness. It is recommended to start with stationary activities before moving on to dynamic activities like walking or driving.
Why does the vision on the sides of the lenses seem blurry?
The outer lateral regions of progressive lenses contain areas of astigmatism distortion, which can cause blurriness. Wearers should turn their head rather than just moving their eyes to look at objects to the side.