Wholesale Lenses Photochromic Factories – Photochromic Bifocal Lens – YOLI
Wholesale Lenses Photochromic Factories – Photochromic Bifocal Lens – YOLI Detail:
Presbyopia
When people aging 40 or so, our eyes become less flexible. It becomes difficult for us to adjust between distant objects and close objects, as in between driving and reading tasks. And this eye problem is called presbyopia.
Photochromic Bifocal Lens
Single vision lenses are used to sharpen your focus for either nearby or faraway images. However, they cannot be used to sharpen your vision for both. Bifocal lenses enhance your vision for both nearby and faraway images.
Bifocal lenses consists of two prescriptions. A small portion in the lower part of the lens contains the power to correct your near vision. The rest of the lens usually is for your distance vision.
The photochromic bifocal lenses go darken as sunglass when you go outdoors. They protect your eyes from bright light and UV rays, allowing you to read and view clearly at the same time. Lenses will become clear again indoors within only a couple of minutes. You can easily enjoying indoor activities without taking them off.
Available Types of Photochromic Bifocal Lenses
As you have known bifocals have two prescriptions in one piece of lens, the near prescription portion is called “Segment”. There are three types of bifocals based on shape of the segment.
Photochromic flat-top bifocal lens is also called as photochromic D-seg or straight-top. it has a visible “line” and it’s biggest advantage is it offers two very distinct powers. The line is obvious because the change in powers is immediate. With the advantage, it gives you the widest reading area without having to look too far down the lens.
The line in photochromic round top is not as obvious as that in the photochromic flat top. When worn, it tends to be much less noticeable. It functions the same as the photochromic flat top, but the patient must look farther down in the lens to get the same width due to the shape of the lens.
Photochromic blended is a round top design where the lines have been made less visible by blending the different zones between the two powers. The advantage is cosmetic but it does create some visual distortions.
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We aim to find out high quality disfigurement in the generation and provide the most effective services to domestic and abroad clients wholeheartedly for Wholesale Lenses Photochromic Factories – Photochromic Bifocal Lens – YOLI , The product will supply to all over the world, such as: Netherlands, Kuwait, Sri Lanka, Satisfaction and good credit to every customer is our priority. We focus on every detail of order processing for customers till they have received safe and sound products with good logistics service and economical cost. Depending on this, our products are sold very well in the countries in Africa, the Mid-East and Southeast Asia.
By Gill from Georgia - 2017.03.08 14:45
Although we are a small company, we are also respected. Reliable quality, sincere service and good credit, we are honored to be able to work with you!
By Karen from El Salvador - 2017.04.28 15:45
