Many believe that the best way to correct nearsightedness, farsightedness and astigmatism are the traditional glasses.Tasteful modern optics quality from the best manufacturers can actually be a real ornament to create a unique and respectable image.And still more effective solutions to problems with vision are contact lenses.
main advantage of contact lens to the spectacle - is that when you use the lens does not occur limits the field of view and optical image distortion when viewed from the side, as with the eye lens creates a single optical system.The lenses do not fog up like glasses do not move out, they do not need to be regularly cleaned of stains, they can not hurt the person - in general, the lenses do not distract the attention throughout the day, providing maximum comfort and enjoyment during the occupation favorite thing.
Of course, when using the lenses have to comply with certain rules - for example, on and off they should only clean hands.In addition, for the selection of lenses you need to visit an ophthalmologist's office.The ophthalmologist will make a survey and take into account the characteristics of the lens, and the structural features of your eyes, and learn how to properly put on and take off the lens.
The variety of contact lenses that offer modern manufacturers, is extremely high.
most "deserved", the traditional soft contact lenses - with the regime of wearing six months to a year - require constant nursing care (HO4, Cooper Clear).There lens and quarterly replacement - for example, Optima FW.They are little different from the traditional.The only difference in the level of protection of the bacteria - in more frequent replacement lens above it.
more modern, and more easy to care for contact lenses, whose service is limited to one month (Proclear, Biomedics 55) or two weeks (Asuvue Oasys and Acuvue Advance).You can wear them in a flexible manner - if necessary - up to 72 hours, up to a week (Air Optix Aqua), up to two weeks (Biofinity) and even up to 30 days (Air Optix Night & amp; Day), without taking off.
one-day lenses are one day and before going to bed just thrown away, they do not need any treatment.Due to the short period of use, the lens in this class are secure.The most recent of them - Proclear 1 Day, Clariti 1 day, 1 Day Acuvue Trueye and Dailies AquaComfort Plus.
form of contact lenses depends on the destination.For example, the spherical lens used to compensate for presbyopia and myopia.Aspheric design reduces aberration in the dilated pupils, thus increasing the clarity of vision in low light.Toric lenses correct astigmatism (loss of sharpness of vision due to corneal reshaping).Multifocal lenses prescribed for presbyopia (age-related farsightedness).
In the production of contact lenses using the most advanced technology.Great attention is paid to such property of the material, as the biocompatibility, ie the ability to be "native" to living cells.This is an innovative development of ophthalmology - created a unique coating component of cell membranes of the cornea.
materials is improved ability to pass oxygen to give the eye to breathe and hydrophilic (moisture content level), prevents dryness of the sclera.
example Clariti - lenses third generation silicone hydrogel lenses daily wearing monthly replacement.They do not apply any special forms of surface treatment, and to form abundantly wetted surface of the lens (to combine several monomers) uses patented technology AquaGen.Turning silicone make silicone hydrogel lenses are more practical than conventional hydrogel lenses.
important for the health of the eye feature is the ability of materials to contact lenses to protect against UV radiation.
tonal and color lenses not only correct the vision, but also fulfill a decorative function, emphasizing or even drastically changing its own natural eye color.
particularly extravagant carnival and club Lens.They convert the color of the eyes is very unusual way.Cat's Eye, the spiral, the dollar, the flame ... - with the help of the decor, completely hide the natural color of the eyes, you can play and amuse others, making your image bright and memorable.
Articles Source: panoptic.ru, shkolazhizni.ru
