Unfortunately, vision problems are not common today.day have become a very common and everyday phenomenon. Nearsightedness, farsightedness, astigmatism - this is only a small list of common diseases of the ocular apparatus. And more and more people are abandoning glasses in favor of contact lenses. In particular, many people are interested in night contact lenses. Before we talk about what it is and what disadvantages and advantages night lenses have, it is necessary to clearly define what is meant by this definition.
Lenses only night wear
For the past few years, ophthalmologistsoffer patients who suffer from myopia an alternative to surgery, a method of treatment designed to improve the patient's vision by about 7 diopters. The principle of the eye's operation is very similar to the principle of a film camera. In order for a person to be able to see, the image of objects must be focused on the retina of the eye, as if on a film. And if a person suffers from myopia, this very focusing of the image does not occur on the retina, as in healthy people, but in front of it. And the image itself hits the retina already blurred, as a result of which the person sees a blurred picture. In the same case, if a sick person puts on therapeutic night lenses, they change the shape of the cornea overnight. And as a result, in the morning, waking up, a person sees surrounding objects clearly, as if he or she does not have myopia. Unfortunately, this method of vision correction is very short-term - the therapeutic effect lasts only one day, after which vision will again begin to rapidly return to its previous level. However, if the person puts on the therapeutic lenses again the next night, their vision will become excellent again. You must admit that this method of vision correction, unlike regular contact lenses, has its advantages - during the day you are almost completely healthy. You see the surrounding objects perfectly without glasses or contact lenses. And compared to the surgical method of vision correction, the advantage is obvious - if something goes wrong during the treatment, the solution is simple - just stop using contact lenses. However, do not try to use such corrective lenses on your own under any circumstances. They, like any other, must be selected strictly individually, taking into account the characteristics of each specific person. Otherwise, you can achieve the opposite result - even greater deterioration of vision. It is much wiser and safer to contact your doctor - an ophthalmologist, who will help you choose the right corrective lenses for night wear. In addition, the doctor will tell you how to care for contact lenses. And if you have never used contact lenses before, it is the doctor who should teach you how to put them on and take them off. Believe me, you are unlikely to be able to put on contact lenses correctly on your own, without the necessary skills.
Continuous wearing lenses
And sometimes, when people say “night lenses,”mean the type of corrective contact lenses that can be worn around the clock without taking them off at night. Such night contact lenses differ significantly from regular daytime lenses. If you go to bed without taking off regular lenses at night, you are likely to experience severe discomfort and dry eyes the next morning. Specialized contact lenses designed for round-the-clock wear are made of a special material that does not lose water, and also very well lets in the oxygen that is so necessary for the eyes. As a result, in the morning a person wakes up without any discomfort, redness of the eyes, or, even more so, without signs of eye inflammation. In addition, such contact lenses are made of a material that does not accumulate protein deposits typical of contact lenses. However, this feature of contact lenses for continuous wear in no way cancels the general rules for caring for contact lenses and the need to take precautions. In any case, no matter what night lenses you choose, be sure to visit your ophthalmologist before buying them! We recommend reading:
