Wired
Anyone who likes to pick up their iPhone at night knows the problem: First, the glaring display makes you squint. If you then put the iPhone away, you are almost blind. With a trick, the night vision when using the iPhone can be easily improved.
Color the iPhone display red for better night vision
The iPhone already has one or two features in store to make the display easier on the eyes in the dark. Just think of the “dark mode” or the blue light filter “Night Shift”. But there is another way to make using the iPhone easier on the eyes: you can use a color filter to give the screen a pleasant red tint. This can then be switched on and off via the side button if required. To do this, proceed as follows:
- First, open the Settings app.
- Go to “Accessibility”.
- Then select “Display & Text Size” and tap on “Color Filter”.
- Tap on the switch to activate the function and tick the “Color cast” checkbox.
- Now drag the “Hue” slider all the way to the left.
- You can use this to set the “intensity” of the color.
Now you have to put the color filter on the side button as a shortcut to be able to switch it on and off quickly.
To do this, go to the Settings app under “Accessibility” → “Shortcut” and tick the “Color filter” box. With a triple click on the right side button you can now activate and deactivate the color filter.
Why a red tint?
Some of you may be familiar with the Apple Watch’s red flashlight. This ensures that the eyes when switching from night to day vision – e.g. B. when switching on the flashlight in a dark environment – are not so heavily loaded.
The situation is explained on Wikipedia as follows:
“It is advantageous to use red light for night and orientation light. When it is dark, the eye produces a pigment (rhodopsin) that increases the eye’s sensitivity to light. White light breaks down the rhodopsin in an extremely short time, and the eye’s sensitivity to light is greatly reduced (one is almost blind). Red light has no effect on the breakdown of rhodopsin. The high sensitivity of the eye is retained, the ability to see is good.”
Source: iPhone Tricks