What does D Frame mean? | KOALAEYE OPTICAL

What does D Frame mean?

Types of Adjustable Glasses

Adjustable glasses come in different types including adjustable reading glasses, adjustable focus glasses and adjustable focus reading glasses.

Adjustable reading glasses have an adjustable focal length and compensate for refractive errors. They provide variable focusing so you can adjustable them for desired distance and prescription. They are often used for reading because you do not need to adjust the position of your eyes.

Adjustable focus glasses offer an adjustable focal length. They are used to correct refractive errors including presbyopia. They provide variable focusing so as to adjust the glasses for seeing things close up or far away.

Adjustable focus reading glasses are the same as adjustable reading glasses. You can adjust the dials of the glasses so you do not need to reposition your eyes to see objects clearly in the near or far.


Armada Optical Services

Armada Optical Services is a full-service laboratory dedicated to providing one of the best safe prescription eyewear programs for your organization. They now have different kinds of safety frames, including plastic, stainless steel, frameless, and titanium. Armada provides all the safety lenses available on the market today, including special lenses for welding, furnaces, etc. The company has certified polycarbonate and Trivex (Trilogy) lenses to meet the new ANSI Z87.1-2003 standard. They provide a variety of high impact lenses. Armada is the laboratory for safety, quality, price, selection, service, and knowledge.



Types of Varifocal Lenses

Elite varifocal lens: it has the widest field of vision at all focal points and is tailor-made to your exact vision and customized to fit within your frames. With the least distortion around the edges, they are very easy to adapt to and will give you the clearest level of vision available.

Occupational varifocal lenses: the last varifocal lens we want to mention is the occupational varifocal lenses. They are specific to different lifestyles, hobbies or occupation vision needs. If you frequently perform tasks at a particular distance for a long period of time, then you have a broader, more comfortable zone of vision.


Men’s clear glasses frames

Some men like the classic eyewear style like aviator, wayfarer, or rectangle eyeglasses. If you would like to refresh your daily look, the clear glasses frames with the unobtrusive appeal will deserve your shoot. The clear acetate eyeglasses frame with a round shape makes these clear round glasses a good choice for men.



Do all glasses come with nose pads?

The glasses without the nose brace are plate glasses. In reality, there is still a nose pad, but it is relatively small and it's part of the frame. The westerners have high nose bridges, and many glasses have no or very small nose pads. For example, Harry Potter's glasses have no nose pads. European and American brands will change their nose pads for the Asian market. Eyeglasses without a nose pad rely on the bridge of the nose to support the center beam. It's hard for Asians to stand up, and their eyes are more protruding than sunken like westerners. Glasses are usually demanded to keep a 12mm distance between the lens and the eyeball, otherwise, the optical performance will have a great impact.


Types of Single Vision Lenses

Single vision lenses come in several different types including the 1.59 polycarbonate single vision, 1.57 mid-index single vision and polarized single vision.

1.59 polycarbonate single vision lenses are characterized by their durability and impact resistance. They often include an anti-scratch coating or anti-reflective coating. This lens is much lighter and thinner than a traditional plastic lens, and it blocks the sun’s harmful UV, offering maximum UV protection.

1.57 mid-index single vision lenses are thinner than regular plastic and moderately lighter and stronger. They come with an anti-scratch coating or anti-reflective coating. These lenses are an ideal option for people with relatively higher prescriptions. But they are thicker than the polycarbonate lenses.

Polarized single vision lenses are sunglasses that protect your eyes from light that bounces off smooth, highly reflective surfaces like asphalt, snow, and water. These lenses work by controlling certain light properties and limiting specific wavelengths. They boast a vertical filter that does not allow horizontal glare to pass through.


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What should drivers notice when wearing polarized glasses?

Many drivers like to wear polarized lenses. Indeed, the polarized lens can reduce strong light, eliminate glare, so that the line of sight is natural and soft, but the polarized lens is more suitable for fishing, skiing, and other large areas of the reflective environment. Drivers sometimes have to face the tunnel and another dark scene, the polarized lens is easy to make people suddenly feel dark at the moment. In addition, polarized lenses can make LCD screens and LED traffic lights dim. Therefore, when choosing polarizers, it is best to choose good quality optics, and when going through the tunnel, it is best to take off your glasses ahead of time and blink a lot. Before wearing the driver polarizing lens, try it on and observe whether the polarizing film of the lens is smooth. If the polarizing film is uneven, there will be inflow in the imaging, which may lead to visual fatigue and migraine.

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