Top 5 Multifocal Contact Lenses With High Oxygen Permeability

Contact lenses have achieved a lot of traction with high-quality lenses that remain more hydrated due to cutting-edge technology and the manufacturing process. To reduce the chances of hypoxia in the eyes, eyewear industry experts are constantly bringing innovation for better comfort with higher oxygen permeability. Many people are unaware of oxygen permeability and this blog will surely guide you to know further if you care for your eyes dearly.

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What is oxygen permeability?

If you are wearing multifocal or any kind of contact lenses, then you must be familiar with the term as it is one of the key elements that illustrates the quality of the lens.

According to Wikipedia, “Oxygen permeability is a factor of a contact lens that defines the ability of the lens to let oxygen reach the eye by the process of diffusion.”

In layman’s language, Oxygen permeability defines the quantity of oxygen that is able to pass through the contact lens to reach your eyes. It is usually denoted by Dk, which denotes the power of diffusivity and solubility of the material used to make the contact lens.

A high oxygen permeability material allows more oxygen to reach the cornea and keeps it more wet and healthy. The silicone hydrogel material used in contact lenses ensures efficient Dk or higher oxygen permeability.

The bottom line is that, the higher the Dk or oxygen permeability, the better for your eyes.

How effective are multifocal contact lenses with higher oxygen permeability?

To understand this issue, you need to consider the two very basic types of contact lenses that are available in the market. One is a hydrogel lens and the other is silicone hydrogel. The former makes use of the water itself in the lens to be traversed into oxygen to the cornea. While the latter uses the silicon molecule chain to allow oxygen into the cornea.

The standard hydrogel lens creates a Dk of 40-50 but the silicone hydrogel lens that is available with global contact lens supplier, Vision Direct, has a Dk of 80 and above.

Now if you are buying the standard multifocal contact lenses, then it will have less oxygen permeability and less effectiveness.

On the other hand, if you are buying the silicone hydrogel lenses, you will be gifted with superior quality lenses that will keep your cornea and eyes healthy and safe.

For a better understanding, this feature is including a table to show the top 5 multifocal contact lenses with significantly higher oxygen permeability.