Mac Dispay Setting Best For Eyes

One of the downsides of using a computer, or any device with a screen, is the effect it can have on both our eyes and our circadian rhythms. While eye damage is unlikely and eye strain somewhat contentious there’s much more research that shows the effect of certain colors of light on our brains at different times of the day.

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The blue-ish light emitted by most computer and mobile device displays can cause tired eyes to struggle at night, and it fools our brain into thinking it’s daytime, even when it’s late at night. The solution Apple has come up with is to allow displays on its Macs and iOS devices to shift color automatically at certain times of the day. The screen goes from blue-ish color during the day to warmer more yellow tones in the late evening. That yellowish color is supposed to take less effort to view on the part of our eyes and is less likely to make our brains think it’s still daytime. As you would expect, you can control when and if Night Shift is invoked.

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What is Night Shift?

Night Shift doesn’t need a separate app, it is a feature of macOS that uses your Mac’s clock and your geographic location to determine whether it’s day or night where you are. It then uses that information to set the color temperature of your display — colder during the daytime and warmer in the evening.

The idea is that by making colors warmer, it won’t disrupt your body’s circadian rhythm, or the body clock that controls them, to the same degree. Night Shift can be turned on and off manually, or you can set a schedule for specific times.

What does Night Shift do?

Your body clock controls circadian rhythm, which has been shown to be key to a number of health conditions. It controls when you feel tired or how you sleep. Disrupting it can be a factor in both physical and mental health problems. So it’s important to go to sleep and wake up at the same time each day. By making your Mac’s display show warmer colors at night, night shift reduces the chance it will interrupt your sleep.

How to enable macOS Night Shift

  1. Go to the Apple menu and choose System Preferences.
  2. Select the Displays pane.
  3. Click on the Night Shift tab.
  4. Click on the Schedule menu.
  5. Choose Sunset to Sunrise to have Night Shift turn on and off automatically when it thinks it’s night time where you are.

How to set your own Night Shift schedule

  1. In Night Shift preferences, click on the Schedule menu.
  2. Choose Custom.
  3. Type a start time and finish time into the boxes.

How to control Night Shift manually

  1. If Night Shift is off, go to the Night Shift tab in System Preferences>Display and check the box labelled Turn on until tomorrow.
  2. If Night Shift is on, click on the Schedule menu in the Night shift tab and choose ‘Off.’
  3. Use the color temperature slider in the same window to control the degree to which colors change when Night Switch is turned on or off.

You can also turn Night Shift on or off manually from Notification Center.

  1. Click on the Notification Center icon in the top right of your Mac’s screen.
  2. At the very top of the window, in either Today View or Notifications, is a switch labelled Night Shift. Toggle it to switch the feature on or off.

The easiest method of all — ask Siri

You can ask Siri to turn Night shift on your Apple device on and off.

  1. Click on the Siri button in the menu bar. If you don’t see it, go to System Preferences then click the Siri pane and make sure “Enable ask Siri’ and ‘Show Siri in menu bar’ are both checked. Alternatively, press fn + spacebar.
  2. Say “Turn on Night Shift.”
  3. To switch it off, activate Siri again and say “Turn off Night Shift.”

Night Shift works with external displays if your Mac is connected to one (or more). However, it doesn’t work with projectors or televisions.

Night Shift stuck? Here’s how to fix it

Occasionally, usually when a Mac goes to sleep while it’s on, Night Shift can become stuck in the “on” setting. When this happens, turning it off then on then off again doesn’t seem to have much effect. There is a solution, though.

  1. Go to System Preferences and choose Displays then click the Night Shift tab.
  2. With Night Shift on, make sure “Turn on until tomorrow” is unchecked.
  3. Slide the warmth slider all the way to the left, then all the way to the right again.

That should fix it and you should now be able to switch Night Shift off.

If that doesn’t work, try running macOS maintenance scripts using CleanMyMac X. These maintenance scripts can fix problems with files on your Mac that can cause all sorts of problems. CleanMyMac makes it very easy to run them.

  1. Download CleanMyMac for free here.
  2. Launch the app.
  3. Click on Maintenance.
  4. Check the boxes next to Run Maintenance Scripts and Verify Disk Permissions.
  5. Press Run.


Night Shift can be great, particularly when your eyes are tired – the warmer light is much less harsh on them than cold blue light. However, it does make colors look different. So you wouldn’t want to have it on while you’re editing photographs or video. Also, you can’t deactivate it for specific apps or Mission Control desktops — it’s all or nothing. For tasks that involve writing, or working with spreadsheets, however, it’s excellent.

Night Shift is a very useful feature than can make it easier for your eyes to focus on your Mac’s display late in the evening. It also reduces the risk of disrupting your body clock and interfering with your sleep, which can lead to health problems. It’s very easy to use and there are options for how warm the screen becomes when it’s on, as well as for scheduling when it starts and stops.

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Inverting colors and implementing grayscale have all been consolidated under Display Accommodations in Accessibility, and Apple has added the ability to activate color filters to help people with even more types of color blindness.

Activating these filters is as easy as flipping a switch, so here we go!

Note: Display Accommodations are only available for iPhone 5s and later. For all models before, you'll see a switch to enable grayscale and a switch to invert colors.

How to invert colors

Inverting colors makes the iPhone or iPad screen easier on the eyes for people that are sensitive to brightness and helps make objects a little easier to see for some people with color blindness and low vision.

  1. Launch Settings from your Home screen.
  2. Tap General.
  3. Tap Accessibility.

  4. Tap Display Accommodations.
  5. Tap Invert Colors.
  6. Tap the switch next to Smart Invert or **Classic Invert. Smart Invert reverses the colors of the display except for images, media, and some apps that use dark colors. Classic Invert inverts all colors.

How to reduce White Point

When you enable Reduce White Point, it dims the brightness of whites and bright colors on the iPhone and iPad screen. It is different than simply dimming your screen. It sort of adds a layer of very transparent fog across the screen so that things just aren't quite so bright. It is helpful for people that have brightness sensitivity.

  1. Launch Settings from your Home screen.
  2. Tap General.
  3. Tap Accessibility.

  4. Tap Display Accommodations.
  5. Tap the switch next to Reduce White Point.
  6. Tap and drag the slider to your preferred setting. You can reduce the White Point from 25% to 100%.

How to enable Color Filters

When enabled, Color Filters can help those with color blindness get the most out of their iPhone or iPad. There are specific filters for specific types of color blindness.

  1. Launch Settings from your Home screen.
  2. Tap General.
  3. Tap Accessibility.

  4. Tap Display Accommodations.
  5. Tap Color Filters.
  6. Tap the switch next to Color Filters to turn them on.

  7. Tap a Color Filter:
    • Grayscale
    • Red/Green Filter for Protanopia
    • Green/Red Filter for Deuteranopia
    • Blue/Yellow Filter for Tritanopia
  8. Tap and drag the Intensity slider at the bottom of the screen to increase or decrease the intensity of the filter.

The way the filter affects your iPhone is shown by the three images at the top of the Color Filters screen. Swipe through the three images to see how the filter will affect the look of your phone.

How to change Color Tint

You can change the color tint of your iPhone or iPad's entire screen if you have light or color sensitivity. Here's how:

  1. Launch Settings from your Home screen.
  2. Tap General.
  3. Tap Accessibility.

  4. Tap Display Accommodations.
  5. Tap Color Filters.
  6. Tap the switch next to Color Filters to turn them on.

  7. Tap Color Tint.
  8. Tap and drag the Hue slider at the bottom until the tint is what you need.
  9. Tap and drag the Intensity slider until the intensity is where you need it to be.

Adjusting the tint of your iPhone or iPad's screen is fairly similar to adjusting your TV set, but if you feel like you went too far and just want the original screen tint back, just tap the switch next to Color Filters, and that'll set everything back to normal.


Any questions? Let us know in the comments below!



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