How to Zoom In And Zoom Out By Mouse In IMAC

Step 1

Click the Apple icon at the top left corner of the screen.

Step 2

Under "Personal" click Universal Access.

Step 3

Under "Zoom" click the Options button.

Final Step 4

At the very bottom, make sure the checkbox is enabled that says use scroll wheel with modifier keys to zoom and make sure it has the "control" arrow in the input box. If it doesn't simply click in the box and press the control key. Click done.