Save your eyes by using night mode in Twitter and other apps

Twitter offers an option that turns its normally white background to a shade of dark blue.

The white glare of the many screens in our lives can easily lead to tired, dry eyes by the end of the day. But there is an easy way to give your eyes a break in the evening - and save power to boot. 

At night, a dark background with a light font is easier to read on a computer display than a light background with a dark font. For this reason, some websites offer their registered users a night mode option.