Comfilcon A is the material used in CooperVision’s Biofinity family of monthly contact lenses. Introduced in 2008, it’s a silicone hydrogel material designed to combine high oxygen transmission with high water content.
But what exactly are Comfilcon A contact lenses? And why have they become so popular among both doctors and contact lens users?
Are hard contact lenses and rigid gas-permeable lenses the same? The answer is… yes and no.
Today, if someone says they wear “hard contact lenses,” they’re most likely talking about rigid gas permeable (RGP) lenses. These are hard (or rigid) contact lenses that allow oxygen to pass through them. Or, in other words, they are “gas permeable.”
The terms are now used so interchangeably that they’ve effectively become synonymous. However, technically, they’re not the same thing. While most modern hard contact lenses are RGP lenses, the original hard contacts were something quite different.
Keep reading to find out how the original hard contacts evolved into the RGP lenses used today, and how that evolution changed contact lens technology forever.
The majority of contact lenses sold today are either soft lenses or rigid gas permeable (RGP) lenses. But there is another type of contact lens.
Hybrid contact lenses combine the features of both types. They have a rigid gas-permeable inner section surrounded by a soft outer skirt.
They’re most often prescribed for people with keratoconus, severe astigmatism, and other corneal conditions that can be difficult to correct with standard contact lenses.
We’re going to discuss exactly what hybrid contact lenses are and how they can help with these conditions.
Another year means another collection of amazing customer photos and EZContacts reviews!
Throughout 2026, EZContacts shoppers have been showing off their newest eyewear finds, sharing everything from incredible deals to perfect prescription lenses and speedy deliveries.
Here are some of our favorite customer stories from the year so far.
“Hydrogel and “silicone hydrogel.” They may sound similar, but these materials actually represent two different generations of contact lens technology.
So how are they different? The short answer is that silicone hydrogel contact lenses let much more oxygen through to the eye than traditional hydrogel lenses.
That’s why most modern soft contact lenses are now made from silicone hydrogel materials.
But if silicone hydrogel is newer, does that automatically make it better? And how exactly are the two materials different? Let’s take a closer look.
