4 ms·

Even better, the analog (or old) solution: just shutdown or sleep the PC/screen for 20-30 min and meanwhile do anything else.

• okprod 5y ago
  I try to stop being exposed to any electronic displays an hour before going to bed. There's enough to do, like meditate, read a bit, make lunch/es, shower, etc.
• queuebert 5y ago
  Exactly. Read a real book before bed. No blue light there.