I wear contacts and glasses.
I was at work and had my contacts in for only about an hour when I was in my work truck with the a/c on when my vision started getting hazy even though i can see clearly at the same time if that makes sense.
Thanks for your Question
Most likely you have dry eyes. You should use non preservative lubrication eye drops or wetting eye drops to treat dryness. There are special eye drops that can be used while wearing contact lenses such as systance for contacts