Imac screen hazy in middle
My iMac screen has become hazy in the middle of the viewing area. It is not the pixels, but looks more like it is on the outside.
I tried cleaning the exterior, but that doesn't help.
Sometimes condensation can get trapped between the glass and the screen. If making Apple menu -> system preferences -> Displays adjustments to the color of the display doesn't help, it may need service to replace the glass or the LCD behind the glass.
http://www.ifixit.com/ offers tools and solutions for out of warranty machines. Be mindful of static electricity if you should choose to do the fix yourself.