Using dim, low-intensity lighting like fifteen to twenty tea lights at night can help maintain night vision and avoid disrupting the circadian system.

“And I found out that my night vision is very strong. So I found out that I, especially in the winter, I only need candle lights. So I literally use these tea lights, and I put like 15 or 20 of them- And it's so nice. I could see it clearly doesn't affect my circadian system.”