In our age, the number of people with weakened vision is quite significant (according to some estimates about 90%) and continues to grow. It is caused by many reasons: constant siting for books and other printed products, and from early childhood; Television, Computers and Other. The most ancient way to correlate vision - glasses today are more technological: contact lenses, as well as surgical intervention (laser correction). In this article, our site will tell you how to choose the right contact lenses.
What lenses are
So what is contact lenses? In essence, it is the same lens, as in glasses, but made of a special polymer capable of saturated with water, which prevents the drying, both the lens itself and the horny shell of the eye. Unlike glasses, the contact lens does not have a rim, or rather a peculiar frame for her for her. The inner surface of the contact lens accurately corresponds to the form of the eyeball, which provides dense adjacent. Outdoor - responsible for the correct focus of the rays of the light falling into the eye.
Currently, soft contact lenses were most common, but there are also rigid, which were invented several earlier, they are prescribed with complex diseases and are much less common.
Soft lenses are there «Traditional» and «planned replacement». The first serve several months and after a certain period of time (usually daily) need special cleaning. Lenses planned replacement do not need special care. After some period of wearing, they are simply emitted and replaced with new.
In addition, there is another kind of contact lenses - cosmetic, which in addition to the correction of vision, have another feature: change the color of the eyes, or enhancing their natural shade.
What better glasses or lenses?
The question is not easy. After all, despite many advantages, contact lenses have a number of shortcomings compared to glasses. They require constant care or periodic replacement, not every eye will be susceptible to this «Foreign body». However, contact lenses have many advantages compared to glasses:
- Contact lenses are indispensable for athletes, because it is simply impossible to play sports in glasses sometimes, unless of course we are talking about such a sport as chess and t.NS.
- At the entrance to a warmer or wet room, the glasses constantly fade, and the contact lenses are deprived of this shortage.
- Contact lenses more correctly transmit image and shape of objects than glasses.
- Right of the glasses limits the lateral vision, while contact lenses allow you to see all the surroundings completely.
- Well, finally, as already mentioned, with the help of contact lenses, you can change the color of the eyes, which will quite like many.
True, with the help of glasses, you can also create your own unique image. But, ultimately, everyone must decide for itself: what is better than glasses or contact lenses. And for this you need to try it at least.
As for the value of contact lenses, it is quite comparable with the cost of glasses, so this question is unlikely to be decisive when choosing between glasses and lenses.
Selection of contact lenses
If you decide to purchase contact lenses, you need to start with advice with an ophthalmologist. And although most of the Cabinets of Contact Correction of Vision have in their doctor-ophthalmologist in their state, it can often happen that a regular doctor can persuade you to gain contact lenses, although their wearing is contraindicated. Therefore, it will be reasonable, first to visit an independent doctor and get advice from him.
After that it is necessary to make a decision as you will wear contact lenses. Shoot every day and process with a special solution, or select the lenses of the planned replacement, which although it is more expensive, it requires much less care, and you can wear them without removing, up to several months.
The lenses are selected strictly individually, while the following parameters are taken into account: the power of diopters, it can be different for each eye, the base curvature of the cornea and the diameter of the lens. Each lens on the package must have an appropriate marking, where D is the diopter (optical force of the lens); BC - basic curvativity; DIA - lenses diameter.
Properly chosen lenses should not cause a feeling of discomfort in the eyes. At the same time, it is possible at first to be somewhat unusual to navigate in space, but the eyes should not hurt or get it.
Tips for contact lenses
When purchasing lenses, you must definitely talk about how to properly handle contact lenses: with what periodicity to shoot, how to care what you can not do. Although here, our site considers it necessary to recall the basic rules for contacting the contact lenses:
- Contact lenses can not be touched with dirty hands, it is better to try less to touch them at all;
- It is necessary to care for lenses only with a special solution, and in no case with water or something else;
- You can not sleep in the lenses if they are not intended for this;
- Strictly distinguish the left and right lenses, never change them in places;
Selection of contact lenses - the question is not simple, because we are talking about your health. And in this question should not rely only on your own knowledge, intuition or guesses. In any case, it is necessary to consult with the doctor and then you can look at the world in a new way.
