October 26th, 2010 | Author: admin
Metal Prescription
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Tifosi Salvo Dual Lens Polarized Sunglasses $59.95 Ear pieces made of Grilamid TR-90, a homopolyamide nylon characterized by an extremely high alternative bending strength, low density, and high resistance to chemical and UV damage. None pieces for a no-slip fit. Spring-hinge temples pieces for a customizable, comfortable fit.... |
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US $7.89
There are two aspects in the purchase of vessels: the frame and lenses. This article will focus on the things you should consider when choosing eyeglass frames online.
The first thing to look at is the size of the frame on top of everything else. More and more online optical shops provide proofs in the system for customers to upload photos and try on glasses online, however, remember to pay attention to whether virtual testing system technology has accuracy of size shows the relative size of the structure of your face. This is important because most models of chairs are available only in a one size. If you like the style of frame, but find the picture is too big or too small for you, chances are you will not find the same model framework that fit you.
Second, consider the limitations on the purpose of certain frame styles when choosing a frame.
For semi-rimless frames and rimless, there is a limitation of the target materials that can be used, which would affect the total cost of the glass. In the semi-rimless frames, slot has been created to celebrate the nylon. While the groove is supported by nylon lenses for the frame structure of the slot also weakens the lenses making it more prone to jump. You you can use normal plastic lenses, however, impact resistant lenses are highly recommended.
For rimless frames, only impact resistant lenses be used because the lenses must be strong enough to allow holes to be drilled through.
Examples of lenses are impact resistant lenses polycarbonate lenses, and Trivex some index 1.60 or 1.67 etc lenses impact resistant lenses are generally more expensive than normal plastic lenses (Eg, C39 and the rate of 1.56 lenses) which translates into higher costs in the manufacture of glass with semi-rimless frames and rimless. However, larger images tire usually do not have this limitation.
Third, consider the function of the vessels which would achieve.
Glasses can be equipped single vision lenses for distance only or almost only. However, if as multifocal or bifocal glasses, ie to use the glasses for both distance vision and close, then there is a requirement of target depth in the frames. Depending on the design of the lens, some optical shop requires the depth of the lens lens multifocal to be as large as 30 mm. If you intend to buy glasses in a frame and lenses are installed in a different store, be sure to ask about requirement of the depth of the target in advance.
Fourth, the material of the structure is another thing to consider.
If you live in constant conditions wet weather or if you tend to sweat a lot in the face, or if you have hyper-allergic type of skin, metal frames can not be a good choice. Good alternatives are frames of plastic or titanium.
To achieve the best cosmetic outcome in general, must also take into account your prescription.
For a recipe less strong, for example -9.0 sphere, the lenses are usually very thick at the edge, even with very high density index 1.74 lenses. To minimize edge thickness is recommended to choose the frames with a small width and depth of the lens objective. Semi-rimless and rimless should be avoided whenever possible due to the advantages thick.
Optical Direct Online Store is an eyewear online store that sells eyeglasses, sunglasses and contact lenses. The web site features virtual try-on system E Try-on to help you make informed decision on frame choices. Based on optical dispensing principle, lens recommendation program provides you with lens options that are best suitable for your prescription so that best overall aesthetic result is achieved while keeping the cost to minimum.
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