Some women who believe that glasses are bad for the appearance, replace them with lenses. But they are not so easy to pick up, so many people are thinking about how to choose the right contact lenses. After all, you need to take into account a lot - from contraindications to your own preferences. In addition, a visit to the ophthalmologist is mandatory. More details about the procedure for selecting contact lenses, we will discuss further.
With what it is necessary to begin?
Selecting lenses is a complex process, so you must follow certain rules that will later save you from additional health problems. First of all, it is necessary to begin with a visit to an ophthalmologist. It is desirable that the consultation took place in the office of computer diagnostics. Modern equipment can more accurately determine which lenses you need. Including, the necessary equipment will be able to measure the cornea to determine the diameter of a suitable lens. This number varies from 13 to 15 mm. Further, it is necessary to study the catalogs with lenses of different manufacturers, where it would be not only a complete description of the product, but also an instruction for the care of it.
Having looked through several catalogs, choose those which most correspond to the recommendations of the doctor. Also pay attention to the price. The most correct price-quality ratio occurs in lenses with a price above the average, since they are of good quality, and you do not have to overpay.
Categories of lenses
Before you start to study the lenses of different manufacturers, it is worth to know which categories are distributed contact lenses, and which ones are better to choose, you will help determine your diagnosis. First of all, all lenses are divided into three groups:
- toric - corrective astigmatism;
- spherical - correcting myopia;
- bifocal - correcting farsightedness.
It should be taken into account that they are also divided into:
- soft;
- solid.
The rigidity of the lens depends on the material from which they are made. Soft lenses are divided into:
- hydrogel;
- silicone-hydrogel.
The first are the softest, since their shell consists exclusively of gel, and inside there is water. Rigid lenses are designed to correct high degree of astigmatism and are made of thermoplastic and silicone. Inside, they also contain water, but its amount is not more than 50%.
Lenses can have different lengths of wearing - from 1 day to a month. Sometimes it becomes a determining factor. So, long-wearing lenses can be usable from a week to a month. But such lenses, alas, are not suitable for everyone, so be careful. Variable wearing lenses can be worn without removing one or two days. Daily lenses, in turn, can be worn for not more than one day.
Being interested in how to choose the right contact lenses, it will be necessary to find out that they also differ in the degree of hydrophilicity (the percentage of water content). Least
How to choose colored contact lenses?
The choice of color lenses is even more difficult. The doctor-ophthalmologist should necessarily give the reference to a choice of color lenses . But before that, he must measure the exact centering, dioptric value and choose the radius of curvature. Knowing the results of these measurements and listening to the doctor's recommendations, you will know how to choose the right contact lenses yourself. We advise you to pay attention to products from well-known manufacturers, as they give a more accurate description of their products. Thus, you have less chance of making mistakes. In addition, well-known brands are monitoring the quality of their products, as they are afraid to lose respect of buyers and competitors.