Wholesale Bifocal Flat Top Manufacturers –  Bifocal Lens  – YOLI

Wholesale Bifocal Flat Top Manufacturers – Bifocal Lens – YOLI

Wholesale Bifocal Flat Top Manufacturers – Bifocal Lens – YOLI

Product Detail

Product Tags

Related Video

Feedback (2)

We insist over the principle of development of 'High top quality, Performance, Sincerity and Down-to-earth working approach' to supply you with exceptional services of processing for Optical Ball Lens , Super Hydrophobic Lenses , Sunglass Lens Optical , Trust us and you will gain more. Please feel free to contact us for more information, we assure you of our best attention at all times.
Wholesale Bifocal Flat Top Manufacturers – Bifocal Lens – YOLI Detail:

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.


Product detail pictures:

Wholesale Bifocal Flat Top Manufacturers –  Bifocal Lens  – YOLI detail pictures

Wholesale Bifocal Flat Top Manufacturers –  Bifocal Lens  – YOLI detail pictures


Related Product Guide:

With reliable quality process, good reputation and perfect customer service, the series of products produced by our company are exported to many countries and regions for Wholesale Bifocal Flat Top Manufacturers – Bifocal Lens – YOLI , The product will supply to all over the world, such as: Comoros, Rotterdam, Iran, Due to our good goods and services, we've received good reputation and credibility from local and international customers. If you will need more information and are interested in any of our solutions, be sure to feel free to contact us. We look forward to becoming your supplier in the near future.
  • This supplier's raw material quality is stable and reliable, has always been in accordance with the requirements of our company to provide the goods that quality meet our requirements.
    5 Stars By lucia from Oman - 2018.11.04 10:32
    The factory workers have rich industry knowledge and operational experience, we learned a lot in working with them,we are extremely grateful that we can encount a good company has excellent wokers.
    5 Stars By Belinda from Mumbai - 2017.03.08 14:45
    Write your message here and send it to us
    >