It takes around 30 to 40 minutes for your eyes to get accustomed to the darkness.
If using a torch, cover with a red filter so as to preserve your night sight.
Vision is distorted in the dark.
Look at the side, not direct on objects, edges show clearer at night.
Keep to open country where it`s brighter.
Use your ears and smells.
Walk slowly and test each step.
Wilderness Survival