Now glasses began to perform not only protectiveor corrective function, but also serve as a fashionable accessory that can change the appearance of a person and complement a stylish image. There are several functional types of lenses, and even more forms of frames. But before you buy a model you need to know how to determine the size of glasses, so that they are comfortable and comfortable to wear.
The correct landing of the said accessory hasis very important, because it will be very sad when an expensive purchase after a few minutes of wearing will squeeze some parts of the face or, conversely, fall off it during inclines.
If the frame has dimensions that do not match your anthropometric parameters, then you should not buy even the model you like.
In order not to make a mistake in choosing a suitable frame,you need to know how to determine the size of points. To help in selecting the frame, there are several generally accepted parameters that allow you to select a convenient model without much effort. There are only four:
When choosing glasses with progressive lenses, especiallyimportant is one of the parameters of the frame - this is the height of the light apertures. During the selection of narrow vertical frames, the height of the lens should correspond to the progressive design of lens glasses.
It is best to contact an ophthalmologist orOptician-consultant who will help to check the correctness of the choice. For this purpose, they check the compliance of the minimum installation height that is indicated for the selected model of spectacle lenses, as well as the size of the selected frame for these glasses.
The main parameters that help when choosing points,are indicated in millimeters, they can be seen on the inside of the tail arch. These numbers will help you answer the question - how to determine the size of points. Ray Ban, Oakley, Persol and other manufacturers of brand models of these accessories indicate the main parameters on their products. For example, you see the numbers 60 - 14 145 on the inside of the temple, they correspond to the following indicators: the width of the aperture, the width of the bridge, or the square symbol, indicate the width of the bridge, and further, through the space, the number that indicates the length of the temples.
The indicator of the width of the spectacle lens is very rarely indicated.
And on some glasses of inexpensive price category, you can find only one number - it corresponds to the length of the ear hook.
As a rule, the rims of sunglasses are larger than those of eyeglasses with a corrective function.
Accurate knowledge of the width of the face will help to solve the question - how to determine the size of points. At home, measuring the width of the face is a bit difficult, but possible.
To do this, you need two pencils or pens to be laid behind your ears, and the distance between them is measured with a ruler.
Let's demonstrate one more way how to determineThe size of the glasses, focusing on the size of the lens. You need to subtract from the width of your face the size of the arch above the bridge of your nose, then subtract another ten centimeters. The resulting number should be divided into two. The result is the optimal size of the lens, which is suitable for your face.
Children are more difficult to sit down to measure their facialoptions. In addition, these indicators are constantly changing, especially regarding the size of the bridge of the nose. The bridge in children's glasses is of great importance, because it is because of the constant change in its width that you have to change your glasses after a certain period of time.
Before the age of six, the size of the nose bridge varies little, and at seven or nine years the nose develops to its finite size.
To measure the main parameters that will be needed to purchase glasses, it is better to use the help of specialists or do it yourself during the sleep of the child.
In order to know how to correctly determine the size of points, you must follow several recommendations when performing basic measurements:
It is best to purchase the described accessories inspecialized stores or optics. In addition, experts recommend choosing famous or at least familiar brands and brands of glasses. And for this it is necessary to seek help from an optician-consultant, who is necessarily present in every decent store that sells glasses.
When buying glasses yourself, be guided by the size of previous, previously purchased.
