China Bifocal Lenses Company –  Bifocal Lens  – YOLI

China Bifocal Lenses Company – Bifocal Lens – YOLI

China Bifocal Lenses Company – Bifocal Lens – YOLI

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How to Tell If You Need Bifocals

Presbyopia is an age-related condition that results in blurry near vision. It often appears gradually; you will struggle to see a book or newspaper up close and will naturally move it further away from your face in order for it to appear clearly. 
At around the age of 40, the crystalline lens within the eye loses its flexibility. When young, this lens is soft and flexible, easily changing shape so it could focus light onto the retina. After age 40, the lens becomes more rigid, and cannot change shape as easily. This makes it harder to read or do other close-up tasks. 

Bifocal Lenses

Bifocal eyeglass lenses contain two lens powers to help you see objects at all distances after you lose the ability to naturally change the focus of your eyes due to age, also known as presbyopia. Due to this specific function, bifocal lenses are most commonly prescribed to people over the age of 40 to help compensate for the natural degradation of vision due to the aging process.

round top bifocal lenses

Three Designs of Bifocal Lenses

Regardless of the reason you need a prescription for near-vision correction, bifocals all work in the same way. A small portion in the lower part of the lens contains the power required to correct your near vision. The rest of the lens usually is for your distance vision. The lens segment devoted to near-vision correction can be of three shapes:

blue lens glasses

Shape 1

The Flat Top is regarded as one of the easiest multifocal lenses to adapt to, hence it is the most commonly used bifocal (FT 28mm is referred to as the standard size). This lens style is also one of the most readily available in almost any medium and including comfort lenses. The Flat Top utilizes the complete width of the segment giving the user a definitive reading and distance transition.

Shape 2

As the name suggests the round bifocal is round at the bottom. They were originally designed to help wearers reach the reading area more easily. However, this reduces the width of near vision available at the top of the segment. Because of this, round bifocals are less popular than the flat-top bifocals.The reading segment is most commonly available in 28mm.

ophthalmic lenses
lens optical lenses

Shape 3: Blended

The segment width of the Blended bifocal is 28mm. This lens design is cosmetically the best looking lens of all the bifocals, showing virtually no sign of a segment. However, there is a 1 to 2mm blending range between the segment power and the lens prescription. This blending range has a distorted perspective that can prove to be non-adaptable for some patients. However, it is also a lens used with patients that are non-adaptive to progressive lenses.


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China Bifocal Lenses Company –  Bifocal Lens  – YOLI detail pictures

China Bifocal Lenses Company –  Bifocal Lens  – YOLI detail pictures


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We can normally fulfill our respected consumers with our great excellent, great value and good provider due to we're much more specialist and extra hard-working and do it in cost-effective way for China Bifocal Lenses Company – Bifocal Lens – YOLI , The product will supply to all over the world, such as: panama, United Arab Emirates, Costa rica, Our products are mainly exported to Southeast Asia, the Middle East, North America and Europe. Our quality is surely guaranteed. If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future.
  • Speaking of this cooperation with the Chinese manufacturer, I just want to say"well dodne", we are very satisfied.
    5 Stars By Bess from USA - 2017.07.28 15:46
    It is not easy to find such a professional and responsible provider in today's time. Hope that we can maintain long-term cooperation.
    5 Stars By Deirdre from Puerto Rico - 2018.07.12 12:19
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