With the continuous development of technology, the safety of contact lenses has been greatly improved. We have always stressed that contact lenses should be used in a healthy way, which should also be based on the correct purchase. When choosing and buying contact lenses, the most common question is what brand is good, then, should we choose big brand ability to have safeguard?
Famous brands on the market, whether product development or technological advancement, are indeed more secure, but brand is not the only selection standard, nor is it the most important factor of contact lenses. In terms of wearing feeling, the influence of Personal eye condition is very large. Even contact lenses that have been wearing are very uncomfortable when the eye condition is not good, so we can not say that the product quality is not good. Big brands have different gears, products between gears are different, you can choose the lens with short cycle and high oxygen permeability within the scope of economic permission.
In fact, oxygen permeability is an important index for evaluating contact lenses.Because the cornea needs a constant supply of oxygen, whether the lens can pass through oxygen well has become a key point affecting the health of the eye. After wearing contact lenses for a long time, protein precipitation gradually increases and oxygen permeability decreases. When choosing and purchasing, the most important concerns should be the oxygen permeability coefficient DK and the oxygen permeability DK/t, which reflect the real oxygen permeability.
Selection of contact lenses should take into account the actual refractive errors and eye needs, individual acceptance, and the degree of matching with the parameters and other factors, which can not be limited to the brand. Under the guidance of the hospital's regular inspection and professionals, knowing what kind of lenses they are suitable for wearing can finally make the right decision.