1. What is the oxygen permeability of color lenses?
Oxygen permeability refers to the degree to which oxygen is supplied to the cornea through the lens. Its value is expressed in Dk/t.
Oxygen permeability is an important criterion for measuring the quality of color lenses, and high oxygen permeability ensures that your cornea absorbs a lot of oxygen to keep your eyes as healthy as possible.
2.How much oxygen permeability is better for beauty contact lenses?
The oxygen permeability of the color contact lenses should preferably be above 125 Dk/t. In fact, the higher the oxygen permeability of color lenses, the better. In the process of choosing color lenses, it is best to choose color lenses with higher oxygen permeability.
In the international contact lens industry, the basis for judging whether a contact lens can be used overnight is that the oxygen permeability of the contact lens must exceed 125 Dk/t, so the oxygen permeability higher than 125 Dk/t is within a relatively safe range. It is recommended that regardless of the oxygen permeability, it is best not to wear lenses for more than 8 hours.
3.Which is more important, water content or oxygen permeability?
For contact lenses made of hydrogel, generally the higher the water content, the better the oxygen permeability.
For contact lenses made of silicone hydrogel, the oxygen permeability is related to the silicon element in the material, but not related to moisture. The higher the silicon content, the better the oxygen permeability, but the lenses will also become harder.
In fact, both water content and oxygen permeability are especially important for contact lenses, and when it comes to choosing between a lot of water or a lot of oxygen, there‘s no right answer. It all depends on your needs and your eyes.