Hi Charlotte,   Thank you for your question. You probably know that Advair is a powder that you inhale. If the powder gets in your eyes, it could be affecting your vision. Did anyone ever show you how to properly use the Advair inhaler? Ask your pharmacist to show you how to use it, or go to this website: http://us.gsk.com/products/assets/us_advair_instructions.pdf. Proper inhaler technique can make a big difference! Other than that, I'm not sure what could be causing the problem. Advair isn't associated with vision disturbances. You may want to visit an eye doctor to see if he can help.   Best of luck, Casey