Foggy or cloudy vision is often attributed to two causes. First, there may be mucous or debris trapped between the lens and the cornea. This can occur when the lens does not align properly to the eye. Second, the front surface of the lens may not be wetting well. There are multiple reasons for this including poor tear film chemistry, improper cleaning, or lens surface breakdown. On rare occasions, foggy vision can also occur when the cornea becomes edematous (swollen). If your vision is still foggy after removing the lens, please inform your eye care practitioner. It is strongly recommended that any foggy or cloudy vision be addressed with your eye care practitioner.