Image by Yumi Abe
Polycarbonate lenses
At EyeBuyDirect, all normal lenses are made of lightweight CR39-resin with a standard lens index of 1.499, coming with a completely scratch resistant coating. Polycarbonate lenses are the lightest materials available (optional), and due to its high impact-resistance and durability, it also takes place to be an integral material utilised in creating bullet-proof “glass”.
Single vision lenses
Single vision lenses have one particular fixed focus point or correction over the entire lens region. They can be utilized for either near, intermediate or distance vision. For instance, glasses for driving or reading are single vision. EyeBuyDirect’s standard free lens is single vision.
Bifocal lenses
A bifocal lens is divided into two sections by a horizontal line, with the upper area of the lens generally employed for distance vision, and the lower section used for near vision. These two distinct focuses in the 1 lens allow individuals with myopic or hyperopic conditions to use a single pair of glasses for each lengthy distance and up-close vision.
Progressive lenses
Also know as varifocals, this form serves the very same purpose as bifocals but without having the clear horizontal line segmenting the lenses. It gives a smooth transition in between distance and near vision, as well as the capability for viewing intermediate ranges.
Coating
Anti-reflective
Our premium anti-reflective coating is perfect for personal computer use and evening driving. They work by rising the light transmission through the lenses, supplying you with the clearest, sharpest vision at all instances. Any great-hunting pair of eyeglasses will appear even better: folks will see your eyes by means of the lenses, not the light reflection!
Anti scratch
No eyeglass lens material – not even glass – is scratch-proof. Nevertheless, a lens that is treated front and back with a clear, difficult coating does grow to be much more resistant to scratching, regardless of whether it’s from dropping your glasses on the floor or occasionally cleaning them with a paper towel. All our glasses get an anti-scratch coating.
Super Thin
As consumers, our interest in thin and light extends to more than just potato chips and beer – it has impacted eyeglasses in a very important way. Most eyeglass wearers are nearsighted, and a standard physical property of nearsighted lenses is that their edges are thicker than their centers. The more powerful the prescription, the thicker the edges (see lens drawings below). Most of today’s fashionable frames are made of plastic or metal with rims thinner than the lens itself. Aso quite well-known are rimless mountings, exactly where the lens edges are completely exposed. in either case, the lens edges are highly visible, and thicker edges can detract from the appearance of the eyewear. We give two type of thinner lenses: 1.57 named thin and lite, 1.6 known as super thin.
Ultra-violet therapy
Yet another lens therapy that is useful but invisible to the naked eye is ultraviolet (UV) protection. Just as we use sunscreen to keep the sun’s UV rays from harming our skin, UV treatment in eyeglass lenses blocks these same rays from damaging our eyes. Overexposure to ultraviolet light is thought to be a case of cataracts, retinal harm and other eye difficulties. An ultraviolet remedy is simple and speedy to apply to most plastic eyeglass lenses, and it does not change the appearance of the lenses at all.
Tint
As opposed to the changeable photochromics, an additional selection in colored lenses is a tint, which remains continual at all instances. Tints are accessible on our glasses with the following colours: brown, grey and green (available 20%, 40%, 60%, 80%). Lighter, style tints are utilized mainly for cosmetic purposes to enhance a wearer’s looks. Darker tints enable the wearer to use the lenses as sunglasses.
Light-adjusting lenses for eyeglasses
Also acknowledged as photochromic lenses, are a kind of coating that tints lenses but with a special characteristic. When indoors, the lens tint will be very light and enable as considerably light in as possible. However exposed to strong sunlight outdoors, the lenses will get dark depending on the direct exposure to sunlight. Please be advised that these lenses do not get as dark as a typical sunglass and will tint up to roughly 60% darkness.
Bifocal lenses for eyeglasses
are a unique sort of lens offered by EyeBuyDirect to consumers who want more flexibility with their frames. Bifocals basically have 2 separate components, the upper component for distance and the lower component for studying. The greatest point with Bifocals is it serves a dual purpose for these individuals who hate modifying from distance eyeglasses to reading glasses and vice- versa.
Progressive lenses for eyeglasses
Also identified as varifocal lenses or just varifocals, are a sort of bifocal but without having the line. This lens is generally named no-line Bifocals and is preferred by people who do not want the line to be obvious on their glasses. They serve the exact same objective as bifocals so as to give both distance and studying vision on a single lens.
Photochromic lenses
Photochromic lenses give the proper volume of protection for the varying light circumstances you expertise.
The Photochromic lenses are darken when getting exposed to UV (ultraviolet) rays. When the UV rays are not obtaining to the lenses (for instance by walking indoors), the lenses will gradually return to their clear state.
Thanks to photochromic lenses, eyeglass wearers can obtain one particular set of glasses that will let them to see within, as properly as minimize the glare of the sun when outdoors
Crucial details are:
- Clear as an ordinary lens indoors and at evening
- Block 100% of sun’s dangerous UVA & UVB rays
- Accessible in Gray or Brown
- Because photochromic compounds fade back to their clear state by a thermal approach, the increased the temperature, the much less dark photochromic lenses will be. This thermal impact is known as “temperature dependency” and prevents these devices from achieving true sunglass darkness in quite hot weather. Conversely, photochromic lenses will get extremely dark in cold weather circumstances, which make them much more appropriate for snow skiers than beach goers while outside.
Launched in 2005 and emerging right now as a key player in the global online retail sphere, EyeBuyDirect.com is a prescription eyewear website offering an extensive range of high good quality, affordable frame and lens packages. The web site provides its budget-conscious and style-savvy shoppers a quickly, simple and effective way to browse an intensive online catalogue, and allows them to acquire eyewear from
Nikon 70-300mm f/4-five.6G AF Nikkor SLR Camera Lens
- Compact and lightweight, this 4.3x autofocus zoom lens is perfect for candid shots, portraits, travel and sports photography
- Count on genuine Nikon optics for outstanding picture good quality
- This is a G designated lens, not ED series – Nikon Aspect #1928
- Accepts 62mm filters (see sidebar)