OS X Yosemite: Magnify the mouse pointer
You can increase the size of the mouse pointer
If you have difficulty seeing or following the mouse pointer when it moves, you can increase the size of the mouse pointer.
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Choose Apple menu > System Preferences, then click Accessibility.
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Click Display then drag the Cursor Size slider to the right to make it larger.
When the pointer changes to an insertion point, crosshair, or any other shape, those shapes are also magnified.
Last Modified: Sep 23, 2015