I'd be far more worried about the microphone.
The most likely thing the camera will pick up is your face staring at the screen - not very informative - or the wall across from the computer if you aren't sitting in front of it. Neither has much spy potential.
On the other hand, your computer's microphone (and may I remind everyone, it doesn't have a red light that needs to be hacked), can pick up all sorts of conversations you would rather remain private. That plus the contents of your hard drive, your web browsing history, every email, text message and phone call you've ever made, every character you've ever typed on your keyboard -- that's the stuff I'd be worrying about. And if they can control your camera remotely, believe me (or if you prefer believe the NSA docs Edward Snowden revealed) they can get all that other stuff. No tin foil hat necessary unfortunately - reading the Washington Post, The Guardian and NY Times will suffice.