I totally agree that Apple should at least make the iMac’s display height variable, and if they can also accommodate rotation - why not. But if you have normal vision your results may be different. It’s okay as a second screen but would be torturous as an only screen. To set up a secondary display on your Powerbook, first choose System Preferences from the Apple menu, and then click Displays. It gives me a great display surface for displaying certain types of content, like running three VMs stacked top to bottom, but it is far from ideal for me (with mono focal vision) because the top part is too high and the bottom part is too low. Interestingly, I have a second 27” screen attached to my iMac with exactly the same dimensions as the iMac screen, in fact I think it’s the same LCD panel, and I have it rotated 90 degrees. When I wore multifocal eyeglasses I had a special pair designed for working at a computer screen specifically to compensate, so I wouldn’t be inclined to tilt my head back. Silicone Keyboard Cover for Apple MacBook Air 13/ Pro Retina 13/ 15. As they mention, people with bifocal eyeglasses need to lower the screen 1”-2” for better ergonomics. com EDID Emulator for HDMI Displays, Copy Extended Display Identification Data. Adjustability would have been ideal because there’s no way as you said to lower the screen. It’s almost as if Apple planned it that way at least for a person of average height, which I am. With my desk height set to 29” my 27” iMac is exactly at the level specified by the Mayo Clinic’s recommendation. Many people have neck pain because of the iMac design. IMac should have Display rotation available for the internal display.

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