Many people like to wear contacts that are silicone hydrogel contact lenses. Lenses made with this material provide a big advantage because they transport oxygen straight to your eye, helping with overall eye health and comfort.
The contact lenses of today all have to do with oxygen permeability, measured with the “Dk” value. For the best oxygen permeability, the higher the Dk the better.
To help you see what types of silicone hydrogel lenses are available these days, here is a small list of the different types going in order from highest for oxygen transmissibility to the lowest.
– Air Optix Night & Day – This lens is for night and day use and is made to be worn for 30 days continuously.
– Acuvue Oasys – This type is made to be worn for 2 weeks on a daily basis or you can wear it for an extended period of 6 days. These lenses have been designed so to have more moisture than other types and this is good for anyone that has a problem with dry eyes.
– PureVision – This is a type that Bausch & Lomb makes and is made to be worn for 30 days continuously.
– Acuvue Advance – This type is made for wearing for 2 weeks every day without any problems. These are disposable contacts.
For anyone that has astigmatism, the silicone hydrogel lenses that you can use are:
– PureVision Toric – This is a lens that has been designed to be worn for an extended period of 30 days. It is made by Bausch & Lomb.
– Acuvue Advance For Astigmatism – You can comfortably wear these on a daily basis for two weeks.
These are just a few of the different types of silicone hydrogel contacts that you can find online. To order any of these lenses online, you must have a valid prescription from your eye doctor. In the United States, by law you must have a prescription to order contacts and your optometrist is also obligated by law to provide with a copy of your prescription.