What it is better to choose contact lenses often do not know those who for the first time became interested in an opportunity to replace points with something more modern. Usually beginners have even no idea what "magic glasses" are. Therefore it is worth beginning with studying models and versions.
What contact lenses to choose: types of products
Contact lenses differ in many parameters. First of all, they have differences on rigidity level. Lenses of the increased hardness are made for the specific person individually, apply them at specific visual impairments. Soft models enter the main range and have a wide model range.
Also contact lenses are optical, therapeutic, cosmetic and decorative. The first type is applied to correction of short-sightedness, far-sightedness, an astigmatism, age changes of eyes on medical indicators, that is are replacement to points. The second type is used for prevention of developing of diseases of eyes during restoration after operations, the undergone viral diseases, etc. The third type performs the same functions, as previous, but for the purpose of correction of esthetic defects of an eye, for example, of a getekhroniya. The fourth type carries out only an esthetic task – strengthens or changes color of an iris of an eye.
Still lenses are corneal, korneoskleralny, scleral. Corneal are imposed on a cornea, have small diameter – 9 mm, are only rigid, optical and are generally used for a solution of the problem of an astigmatism. Korneoskleralny are soft lenses, the size – up to 15 mm, are used for the different purposes. Scleral – large diameter, up to 21 mm, are used with the therapeutic and cosmetic purposes, there can be optical and medical, lenses of rigid type.
On use duration the sight accessories are divided into those which it is possible to carry all the time, and those which should be changed regularly. The first can be carried up to 12 months, the second, depending on model, - once a day, week, month, quarter.
How to choose contact lenses independently?
The variety of the choice does very current a problem how to choose contact lenses for eyes. Of course, an optimal variant – the address to the expert. But if there is no such opportunity, then to make a choice independently, it is worth listening to some recommendations:
- it is necessary to do purchase in specialized salon;
- it is worth paying attention, first of all, on products of the famous producers and not to pursue imaginary benefit, getting something suspiciously cheap;
- solve for yourself with what frequency you are ready to change lenses - optimum for the beginner 1-3 months;
- decide on the carrying period – best of all to buy models for day use;
- to pay attention to water content in lenses and kislorodopronitsayemost indicators, it is better if the first parameter is 50% and above, and the second – 140-170 units.
How to choose the radius of curvature of contact lenses?
That eyes felt in lenses comfortably, the level of curvature of an accessory has to be closer to natural. The standard rate is 8.4-8.6. But for each person it is necessary to select him individually that it is very difficult to make most. It is necessary long will try on different models. It is better to ask for the help the expert at once.
How to choose solution for contact lenses?
Care for an accessory requires special solution. To them lenses wash out every day. It is better to choose multipurpose structure which is suitable both for clarification, and for disinfection, and for greasing. It is necessary to use it, precisely following the instruction.
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