Of course you'd have heard of the joke that when you don't like what you see when doing an auto at night, you switch off your landing lights.
Actually there's a bit of truth in that in a normal landing, a landing light beam only focuses on a narrow spot and tends to contrast too brightly against a darker background - you'll see bits of grass here and there but can't find the helipad. Switching it off and relying on peripheral vision is a much better proposition.
