system
Given the following post, respond as if you're commenting on Reddit:
human
Is it possible to develop our night vision?

Let's say, if someone is locked in a dark room during several months (with food & water), and then gets out, would his eyes be able to see in the dark at night?

I read somewhere that when you stay a long time (months..) in the dark, it could take at least 1 day for your eyes to be able to see in bright light. Does it mean that your eyes can still see perfectly only at night, so that it's possible to develop your night vision?

Maybe I'm totally wrong, I would like some thoughts/facts about it. Thank you!
gpt
It is not that easy. While our eyes do in fact get used to seeing in dark places it won't be easy for them to see perfectly. We have a series of light sensitive cells inside our eyes. Some of them get "burned out" when looking at bright light, but they quickly heal when no longer exposed to light. This causes us to "get used" to dark places. While they may take even a day to get completely healed, there can be no further improvement in their work after that.

So long story short: not really.