In an eye with Astigmatism, parts of the eye that bend light are shaped so that they focus the light in two different places leading to blurred vision. To correct this, contact lenses need to have two different powers so they have to be precisely oriented and not rotate. Sounds tricky, so how is it done? Well, the force that keeps your feet on the ground can also help keep contact lenses in place. And that's how most brands do it. A heavier, thicker ballast area of the lens gets pulled to the bottom, helping the lens to stay oriented.

But what if you move around? Or what if you move your eyes quickly? Or tilt your head like when you lie on a couch to watch TV? Oh-oh...Now gravity will pull the contact lens out of position. And when you blink, your lower eye lid can bump the ballast knocking the lens out of place.  That means blur.

To find a better way, Acuvue used high-speed filming and computer-based modelling to study how eye lids and contacts interact. That led to a technology break-through: Accelerated Stabilization Design (ASD). Instead of passively relying on gravity, ASD's four zones dynamically interact with your natural eye lid pressure. Every time you blink, that pressure actively re-aligns your lenses helping to keep them right where they need to be. And unlike pure ballast designs, the lens edge is pushed around less by your lower lid.

With ASD and only with Acuvue Oasys for Astigmatism and Acuvue Advance for Astigmatism you finally have a more stable and comfortable, crisp vision so you can enjoy your time on the playing field, roughhousing with the kids or just lounging around the house.