I had horrible side effects being on Cozaar, I took it for a week and I can't remember much about my vision at that time as I was sleeping all the day But
if you think it's affecting your vision, then you are right and if your dr said anything you are still right.
I spent over 7 years on Diltiazem, and gradually over time it caused alot of problems to my vision. I couldn't realize it was the medication. But finally I'm off it.