be very responsible approach to the selection of glasses for vision correction.After all, if properly pick up points, then your health could be harmed significantly worsen vision.To determine the true parameters of view, there is a specialist who is called an optometrist.However, in our country do not have such professionals, ophthalmologists are engaged in the selection of points.Entrust selection of points clinics and offices, enjoys a good reputation, which have all the necessary equipment.
So, if a person has problems with his vision, then in front of it the question arises: how to choose sunglasses?After all, this optical device helps eliminate them, and in some cases even enhance the ability to see such an extent that the patient will soon be able to do without them.They consist of lenses and glasses frames.If you think that the pick up points for vision correction is not difficult, we want to dispel your beliefs.
Today, many use the lenses instead of glasses that are worn directly on the surface of the eye under the eyelids.However, these tools and glasses are selected taking into account the specific optical performance.These are dioprii - the most important basic information that everyone who thinks about how to choose glasses, should know.Additionally, if you do not want to bother with the lens, you need to calculate the distance between centers eye.Usually, all it tells the patient ophthalmologist.
More important parameter to be considered when choosing such an important accessory - an index of refraction.After all, from what will be the refractive index depends on the curvature and thickness of the lens.Lenses with a high index of smaller and lighter will distort your face and eyes.Slim and stylish frame to pick up the points so much easier, and points in this scenario can not only correct vision, but also serve to create the image.
material used for the manufacture of ophthalmic lenses, too, should be taken into account.Glass or plastic - the primary material.However, if the question arises, how to choose glasses, it is impossible to give clear advantage neither the one nor the other.High-quality modern plastic lenses are available with scratch-resistant coating.This type of coating also scratch resistant as glass lenses.However, plastic lenses are lighter, since the proportion of plastic lighter than glass.More plastic has a much greater resistance to its splitting, and plastic pieces are not as dangerous as glass.Therefore, glasses with plastic lenses are not as traumatic as their counterparts from the glass.
The positive properties of glass lenses is the fact that their refractive index is higher and higher strength.This suggests that the lenses are made of glass may well be more flat and thin.But plastic has a greater opportunity for dyeing lenses.
special technology, which significantly improves the optical properties of the lens, called an anti-reflex coating.It increases the transparency of the spectacle lens by 8 - 10 percent.Lenses with such a coating causes less fatigue at loads on the visual apparatus, and will be much more comfortable for your eyes.In addition, if you are driving in the dark period of the day, the spectacle lenses with an anti-reflex will allow you to see better.
course, you can draw an important conclusion that should begin to correct selection of points of view is a selection of lenses, especially if a correction rather serious violations.
And more should be considered when the issue arose as to choose glasses such an important component, as the frame.It is necessary to pay close attention to the mobility of the nose pads.If they are tight, they will put pressure on the nose and cause fatigue.Socket with silicone nose pads mobile - the best option.Please be aware that the size of the temples should correspond to the distance from the rim to the convexity of the shell ears.Convenient Socket will not cause fatigue during extended wear.Socket, unfortunately, may be the cause of an allergic reaction, so its choice to be treated responsibly.
When taking into account all these factors, everyone can make the right choice points, which soon will become not just a tool for you as a part of the body, this second your eyes.