Have you ever wondered what happens when you enter a dark room and wait for your eyes to adjust to the darkness? If there is no light in the room, that is, if there is no light at all from the window, you cannot see the surroundings.
Objects must emit photons for you to see. Therefore, our pupils grow rapidly in order to collect these photons, which are very few in the dark. Thus, the light sensitivity of the retina (the light-receiving layer of the eye) increases 16 times, so that we can see in the dark!
In the first 5 minutes, our eyes begin to get used to the light, and after 20 minutes, we reach the best level of our vision in the dark. This is the phenomenon called "eye habituation".
Ayan SAMADGIZI,
student-journalist
