I was in my final year of nursing school, working in palliative/oncology. I had helped a patient to the bathroom (IV pole and everything) when the tunnel vision began. I managed to squat to the floor to avoid falling as the patient called for help. My mentor picked me up and put me in a chair and wheeled me to the break room to lie down. How embarrassing! My patient later stated that she had never seen someone turn so pale. Apparently I was over-doing it with 3 jobs, full time nursing school, and commuting over 2 hours a day.