In my first year, after not sleeping for approximately 2-3 days straight, my eyes were having trouble adjusting to the dark, and every time I saw a dark, unlit area, I would have hallucinations that there were bugs there.
In my first year, after not sleeping for approximately 2-3 days straight, my eyes were having trouble adjusting to the dark, and every time I saw a dark, unlit area, I would have hallucinations that there were bugs there.