How to choose lenses for the eyes? Ophthalmologist's advice
According to recent studies, to date, more than 135 million people around the world have various vision problems. The most common are:
- hypermetropia( farsightedness);
- myopia( myopia);
- night blindness;
- retinal detachment;
In this overwhelming majority of cases can not do without surgery. However, to date, people suffering from hyperopia or the reverse of myopia may not resort to emergency measures. The problem is simply solved with the help of glasses or contact lenses. And more and more people prefer the latter. What is their advantage, how to choose lenses for the eyes, what exactly should be paid attention to when choosing, will be discussed in this article.
Advantages of contact lenses
Not all people agree to wear glasses. Especially it concerns children and teenagers who are afraid of the nickname "ochkarik".In this case, poor eyesight entails many problems. People who do not see well enough often fall into curious situations when they do not recognize their friends on the street and do not greet them. In addition, with poor vision, it is likely that you will miss the right bus and not see any object on the street. For many, glasses are absolutely unacceptable. And it is for this category of people that the best way out of the situation is to wear lenses that have undoubted advantages. They do not distort the dimensions and do not reduce the field of vision, like glasses. In this case, lenses allow you to lead an active lifestyle, erasing the difference between people with good eyesight and shortsighted.
In addition, not all people can pick up glasses that emphasize individual dignity, while contact lenses do not require any special correction. Also, no weather conditions will not interfere with the wearing of lenses, while glasses can fog or get wet, thereby reducing the level of visibility.
How to proceed with the choice of contact lenses
The main rule that should be considered when choosing lenses is that only an ophthalmologist can help them choose them correctly. Therefore, in no case can they be purchased without appropriate consultation. It is very important to know how to choose lenses for the eyes of specialists. It should be remembered that there are contraindications to their wearing:
- various inflammatory processes;
- subluxation of the lens;
- various allergic reactions.
In any of these cases, the wearing of contact lenses will have to be abandoned. However, the correct selection of lenses will bring a lot of positive emotions and a sense of comfort.
The main criteria for the correct choice of contact lenses
Having made a firm decision to start wearing contact lenses, you should know what are the main criteria to consider when choosing them. This is:
is the radius;
- the material of manufacture.
Only with all the parameters you can be sure that you have purchased the right lens for your eyesight.
Tips of the ophthalmologist
The need for a thorough examination of the ophthalmologist is due to the fact that the correct selection of lenses is crucial for eye health. When diagnosing vision, the doctor determines such parameters as:
- curvature of the cornea;
- intraocular pressure;
- dioptric dimensions;
- visual acuity;
- the state of the muscles of the eye.
In this case, these figures can not be determined by eye, so the quality of the equipment on which diagnostics is performed is crucial. After a complete examination of the eyesight, the doctor will advise which vision lenses are suitable for each particular case, taking into account the state of the eyes and age, and take into account the personal wishes that are present.
Indications for wearing
lenses In addition to a person's personal desire, there are certain indications for wearing contact lenses. They can be:
- cosmetic( changing the color of the eye due to various defects);
- professional( when wearing glasses is contraindicated in certain types of activities);
Medical indications for lens wear
The most common indication for wearing contact lenses is myopia of varying degrees. In this case, they contribute to the improvement of binocular vision and accommodative apparatus, which is impossible with the wearing of glasses. Thus, the greatest correction of myopia is possible with lenses.
Another no less common eye disease that corrects good lenses is astigmatism. In this case, it should be borne in mind that the choice of lenses should be done taking into account the disease, as usual can worsen the state of vision. If the selection was carried out correctly, this will guarantee a high quality of vision.
Hypermetropia, or farsightedness, is not always corrected by the lenses quite well. This is due to the fact that the size of images on the retina with lenses is much less than with glasses glasses. This is a consequence of the fact that adapting to wearing lenses is difficult.
The wearing of lenses by people suffering from presbyopia, or in other words, senile hyperopia, requires the use of complex designs, which does not always guarantee sufficient comfort.
With keratoconus, lenses are the best way to improve the quality of vision. With this disease, the cornea takes the form of a cone, which can not be corrected with the help of glasses. At the same time, properly selected contact lenses significantly reduce the level of optical changes, which contributes to a high corrective effect.
With each of these diseases, the question of how to choose lenses for the eyes, strictly individual and requires careful compliance with all the features.
Basic requirements for contact lenses
When making a decision to purchase lenses, the feedback of people who have already used them, are of no small importance. However, if you want to get a really good product, you need to pay attention to the following parameters:
- the level of oxygen permeability;
- the degree of moisture content;
- terms of wearing;
is an assignment.
Do not underestimate the importance of these indicators, because their non-compliance will lead to problems with vision of varying severity. The eye needs oxygen, so the higher this figure for contact lenses, the better. And moisture content is crucial for eye health, as excessive dryness can have very different consequences.
Terms of wearing
lenses One of the most important indicators of the correct wearing of lenses is the time of their use. They are divided into lenses:
- daily replacement;
- planned replacement;
- traditional wearing time;
- extended wear period.
Daily lenses are a one-time product, the life of which is one day. At a price they are more expensive than other options, but at the same time they guarantee the health of the eyes. In addition, daily lenses do not require any special care and do not give any complications. The most common brand of this category are contact lenses 1 day.
The term of wearing a replacement lens varies from two weeks to three months. It is this type that prefers the greatest number of people. Such lenses offer a sufficiently high level of oxygen permeability and moisture content. Optimal choice in this category will be two-week lenses.
Lenses of traditional wearing time require replacement no earlier than every six months. This increased strength of the product is achieved at the expense of such indicators as oxygen permeability and moisture content. In addition, they require careful care, which is not always comfortable for the consumer. The cost of this product is the lowest, however, the risk of damage to the cornea is extremely high.
Lenses of prolonged wearing, which are called silicone hydrolysis lenses in another way, allow their operation for more than a day, including sleep time. However, despite the fact that such lenses saturate the eyes with oxygen and during sleep, ophthalmologists do not recommend sleeping in them without acute need. Knowing the characteristics of each type of product will help you choose the right lenses.
Lens care rules
Regardless of the type and timing of lens wear, careful care is required. Having decided to start wearing contact lenses, you should consider choosing a good liquid for them, which will not cause eye irritation or dryness. If the choice of liquid is wrong, the time of wearing the lenses is sharply reduced, and the risk of various complications increases significantly. That is why it is necessary to give due attention to the acquisition of a good fluid for contact lenses. In addition, every time, placing the lens in a special container, you need to change the liquid so that they go through cleansing and disinfection. The container itself should be washed before each use, and when replacing the lens, purchase a new one. Optimal choice in this case are two-week lenses that are fairly democratic in price, and the service life does not allow contamination of the product to such an extent to cause any complications.
It is also very important to observe the rules of hygiene when handling contact lenses. Wash hands thoroughly with soap and water every time. Categorically it is forbidden to transfer your lenses for carrying to another person, nor to take strangers. It is also extremely important to comply with the terms of their wearing and in time to acquire new ones.
Possible problems for beginners when wearing lenses
Having made a firm decision to start wearing contact lenses, you should be prepared for the fact that some feelings of discomfort are possible, especially at the initial stage. This is primarily an adaptation to a foreign object in the eye, which in all passes in different ways. In addition, many experience difficulties in the process of putting on lenses, as well as removing them. At the same time, if you decide to start wearing lenses, reviews that you can hear do not always prepare for all these difficulties. Therefore, it is desire and patience that will become the key to the successful application of this corrective product.
Signs in which you should stop wearing
lenses Despite all the advantages of contact lenses, all people are different, and they may not be suitable for everyone. It is quite possible the occurrence of various reactions that require the immediate abandonment of the corrective product. As a rule, these are various manifestations of allergy and constant dryness in the eyes. If the problem is not solved when changing lenses, then none of them are suitable and will have to be abandoned.
Thus, it is wrong to think that lenses are a panacea for poor vision. Having learned how to select lenses for the eyes, having carried out all the necessary examinations and stopping at any option, you should be prepared for the fact that the adaptation process will not go as smoothly as we would like. It should be remembered that the process of making lenses is constantly being improved. And even finding the most suitable, all the same, eventually they will have to change them to more modern and qualitative ones.