How can I force focus or fix a blurry and 'washed out' Apple Thunderbolt Display camera?
Just fixed mine, my camera is inside the TB Display, I took the camera out and since it is fixed focus I turned the objective lens  1 quart and connected again. It was fixed!

Instructions to tear down the monitor are at  Ifixit 
https://es.ifixit.com/Teardown/Apple+Thunderbolt+Display+Teardown/6525