Invert colors: If you find it easier to read light text on a dark background, give this setting a try.The keyboard shortcut to toggle VoiceOver on and off is Command + F5. Many Zoom users also enjoy having their text and application controls spoken aloud as well as magnified. VoiceOver: The OS X built-in screen reader.Zoom: The OS X built-in screen magnifier.The Accessibility Options Screen has several settings of interest to users with visual impairments. Note: Depending on your keyboard preferences, to initiate this or any other key combination that includes one of the Function keys, you may also need to press the FN key, which is located at the extreme bottom left corner of most Mac keyboards. Command + Option + F5 summons a complete list of accessibility options, including turning screen magnification on or off, increasing or decreasing contrast, and inverting screen colors. The OS X operating system includes built-in features to assist users with a range of physical and motor disabilities.

Getting Help with OS X Accessibility for Users with Visual Impairments Low Vision and Blind Computer Screen Access Using the VoiceOver Screen Reader Low Vision Computer Screen Access Using the Zoom Screen Magnifier