3 ms·

you mean like the sun?

• nvy 2y ago
  The sun is decidedly unsafe for eyes.
  • jpalawaga 2y ago
    (for ultraviolet light reasons)
    • nvy 2y ago
      IR as well.
• retrac 2y ago
  The sun also emits in the visible wavelengths. Your eyes do not feel pain from bright lights due to the heat or similar. It's a response to brightness, in the visible spectrum. Without the visible component, there's no pain. With unhappy optical circumstances it could cook the retina because the pupil is dilated and there's no instinctive response to look away. Not sure how plausible those circumstances are. But I sure wouldn't put a 10 watt IR LED source right up to my eyeball.
  • eythian 2y ago
    https://arstechnica.com/health/2023/11/bored-ape-creator-says-uv-lights-at-apefest-burned-attendees-eyes-and-skin/ https://arstechnica.com/health/2023/11/bored-ape-creator-say... It can also happen with (the wrong type of) UV lights.