Pure Vision II - third of silicone hydrogel contact lenses from the company Bausch Lomb. It was introduced by the manufacturer in 2010 to gradually replace their lenses PureVision. The manufacturer claims that the quality of the contact lens is improved compared with the previous model. Unfortunately, we can not on its practice neither confirm nor deny this statement.
The advantage of silicone hydrogel contact lens is much greater than that of hydrogel lenses measure oxygen permeability (Dk / t 130). Silicone is embedded in the matrix material of the contact lens and forms a "transparent" for the passage of oxygen bars. The level of oxygen permeability of silicone contact lenses oxygen permeability than water (130 Dk / t). That is, the silicone contact lenses having greater than that of water (tears) oxygen permeability, does not actually prevent the penetration of oxygen to the cornea. This allows you to negate the problem of hypoxia (oxygen deficiency), which can sometimes occur while wearing hydrogel lenses (in the case of misuse).
Unlike silicone hydrogel lenses needed for a longer period of adaptation. Silicone contact lenses of the first and second generations are characterized by high hardness and density, they would be rude. Some users did not manage to go on with silicone hydrogel lenses. We recommend that you do not particularly worry about it and continue to wear your hydrogel lenses, unless, of course, the desire to "go to the silicone" is not due to the doctor's recommendation and insistence. In this case, try to look for a more soft silicone lens (third generation).
Users should also be aware of some specific information about silicone contact lenses:
Better to use daily wear (to shoot at night) and daily cleaning;
If you are using the extended (continuous) mode of wearing, in a week (7 days), according to the directive producer you have to discard the lens and replace it with a new one;
Given that Ukraine has no means of care designed specifically for silicone contact lenses, you must as the best way out to use peroxide to clean;
Incorrectly chosen physician silicone contact lenses can cause damage greater than that incorrectly picked hydrogel lenses.
