Advantages and disadvantages of silicone hydrogel contact lenses
Silicone hydrogel is a very popular contact lens material recently. In order to make you more intuitive to understand this new material, today we will talk about the advantages and disadvantages of silicone hydrogel contact lenses.
Silicone hydrogel is an organic polymer material with strong hydrophilicity. It can construct oxygen channels through silicon molecules, so that the oxygen permeability of contact lenses is not limited, so that water molecules can freely pass through the lens to the eyeball without being affected by the water content, so its oxygen permeability can reach more than five times that of ordinary lenses. Silicone hydrogel has the characteristics of high oxygen permeability and high moisture, even if worn for a long time, there will be no dry eyes, can be said to improve the oxygen permeability of the lens and ensure the comfort of wearing, so that eye health is more guaranteed.
However, every coin has two sides, and the same goes for silicone hydrogel contact lenses. Although the advantages are obvious, due to the addition of silicon in the material, the texture of the lenses will be a little harder than normal lenses, which will take longer for people to get used to when trying to wear them, and may be more difficult for people with very sensitive eyes. At the same time, from the current level of technology, silicon hydrogel is still a relatively cutting-edge high-end products, the price will be more expensive than ordinary lenses, and silicon hydrogel is mostly used for short cycle abandoned lenses, long-term use will still add a lot of pressure on the economy.
Until today, contact lens wearers pay more and more attention to safety and health, which will become the general direction of the development of contact lenses in the future. Therefore, silicone hydrogel contact lenses will have a broader space for development, we know and understand the advantages and disadvantages of silicone hydrogel contact lenses is very necessary!