PureVision2 HD contact lenses with High Definition Optics are designed to reduce halos and glare and deliver the clear, crisp vision that you should demand. Plus, this monthly replacement lens offers design advances for comfort and breathability. With a thin, rounded edge, PureVision2 HD enables a smooth, gentle lens/lid interaction for soft, comfortable lens wear. PureVision2 HD is one of the thinnest lenses on the market today.