How do ""night modes"" on computer screens help people fall asleep?

it doesn't really help people fall asleep but

Explanation:

When it gets dark, your pineal gland secretes the hormone melatonin, which tells your body to get tired and go to sleep.

Answer it doesn't really help people fall asleep but some people it can

Explanation:

Most people dont fall asleep while on computers but the people who do it helps because the screen is not all bright and doesn't keep your eyes wide open

answer; receiver;