Thursday, 7 January 2016

Shopping for Eyeglasses Online – How to choose a Nice Pair?

You can buy a good pair of eyeglasses online from anywhere at your convenience. The process of ordering eyeglasses online is simple and easy. All you need to do is spend 10-15 minutes of your time on a well-known website for eyeglasses, enter your details for your eye power and choose a frame that fits and appeals to you. As a final step, do not forget to read the terms and conditions of payments, delivery, returns and refunds before you make the purchase.

Style and color will largely depend on personal taste, but remember to pick a frame that suits your face type. As a rule of thumb, avoid frame shapes that match your face shape. Round faces should avoid circular or oval frames, while people with angular faces should avoid rectangular or square frames. If you have an oval face, feel free to experiment.

Frame selection is relatively easy. What stumps people is frame size and lens type.

Frame size
It is very important to be aware of the three components of your frame size. They are the eye, bridge, and the temple size. Eye size refers to the width of the lens frame, bridge size is the width of the gap near the nose rests or nose pads while temple size is the length of the ‘arms’ of the frame. If you already have a pair of eyeglasses, look for a series of these three numbers, usually printed on the inside of the arms. They denote these sizes in millimeters and can help you find your size quickly.

If the website offers sizes as small, medium or large, a quick way to tell your size is described here. Stand in front of a mirror and measure the distance (use a folded sheet of paper or string) from the nasion (the part where the nose meets the forehead) to the outer edge of one of the eyes. If the distance is less than 6 cm (2.5 inches), your size is small. If it is considerably larger, your size is, well, large. Otherwise, choose medium.

Lens type
You need to know whether you require single vision or multi-focal lens. Single vision lenses are for correcting near or far vision, however not both. The multi-focal lens is recommended for individuals who need both, but do not wish to use separate glasses for reading and regular use.

The common materials used to make lenses are crown glass, CR-39 plastic, polycarbonate and high index plastic. CR-39 and glass lenses are thicker and heavier, but are quite cheap. Glass lenses can also shatter, so must be avoided for children’s eyeglasses. High-quality lenses are usually made from polycarbonate or its more modern avatar, Trivex. These are extremely resistant and fairly lightweight. High index plastic is a relatively new material developed in response to the demand for thin high power lenses. Both polycarbonate and high index plastic block UV completely.

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