A comparison of ACUVUE OASYS® for ASTIGMATISM and AIR OPTIX for ASTIGMATISM, two time-tested toric lenses.
For patients with astigmatism, Johnson and Johnson Vision Care is offering the bi-weekly disposable ACUVUE OASYS® for Astigmatism. Alcon offers the monthly replaceable Air Optix for Astigmatism, a slightly thicker lens with an aspherical design (an aspherical lens design reduces spherical aberration and halos). To keep the lens in place, ACUVUE OASYS® for Astigmatism features a unique blink stabilizing design with four zones of stability, while Air Optix achieves this with their PRECISION BALANCE 8|4 Design. Water content and oxygen transmission are two parameters that impact the wearing comfort, and - as they contradict each other - manufacturers try to find the right balance. While the water content of ACUVUE OASYS® is 38%, Air Optix for Astigmatism's initial water content is 33%, so they are both quite similar. Johnson and Johnson Vision Care adds Polyvinylpyrrolidone (PVP) to the lens, a popular wetting agent found in many lenses today. In addition, ACUVUE OASYS® for Astigmatism comes with Class 1 UVA and UVB blocking, a feature not found in the Air Optix lens.
ACUVUE OASYS® for ASTIGMATISM and Air Optix for Astigmatism - Spec Sheets
To sum it all up
The highlights for ACUVUE OASYS® for Astigmatism are a blink-stabilizing design, UV blocking, and a somewhat higher oxygen transmission value. Air Optix for Astigmatism is slightly cheaper and features an aspherical lens design.