I've noticed that on my father's new Retina MBP there is a small bright area in the lower right corner of the screen. It is quite apparent in white or lighter colored backgrounds but nearly invisible in in black or very dark backgrounds. It doesn't look like burnt/stuck pixels and it's not dirt either but I'm not sure what it could be and how we could fix it? Attached is a photo that I took (photo doesn't show it that well but I circled the area affected). Thanks.