My iMac has very bad image retention: http://imgur.com/a/MOxzw I have apple care until 2017 and I live pretty far (1hr+) away from the apple store. I drove into the city to take my iMac to the apple store and I showed the gentlemen working there. He ran the official image retention test and my mac "passed" that test. He told me he couldn't do anything more for me and that I should re-install OSX to see if that fixes it. I have since done this, however the exact same image retention is still there, and it has even gotten worse. I'm not sure what to do. I've owned two iMacs before and neither had this issue. Apple care was expensive for this Mac so I'm not sure why they wont fix it. I want to take the Mac back to the Apple Store but again I'll have to take the day off work and head into the city and I'm pretty sure, even though it's very bad now, that they will just run their same retention test, which passes and that they wont help me I called them and they said they'd have to run tests before they replace the screen, and that is after I showed them in person and sent them photos of the retention. I think, by the way, that their image retention test passes because the image retention happens where light colors are retained when I switch to a dark color like you can see in my pictures above, but their test just flashes between a black and white checkerboard which: 1. doesn't end on a dark colored screen like in my pictures, and 2. doesn't resemble how you'd use a computer. For example I sometime read a pdf and have it on my screen for 1 minute at a time, and then when I switch to photoshop I get the terrible retention. Does anyone know what I can do? Am I just screwed?