You just have to be in the dark for 30 seconds without light or light support, and you'll be fine. You don't have to have anything to help you. This is something you have to do on your own.
In darkness, your eyes dilate to let in more light, allowing your retinas to capture more available light. This process helps you see better in low-light conditions by making the most of the limited light available. It can take up to 30 minutes for your eyes to fully adjust to complete darkness.
A cat's eyes can fully adjust to darkness in 20 to 30 minutes. As with people, this time can vary depending on the age and breed of the cat.
Yes only slowly it takes about 20 minutes to adjust fully
yes you can it is because your eyes adventilly adjust to the to the darkness.
Our eyes adjust to the darkness and the rods in our eyes start to work.
a few minutes--it takes longer to adjust to darkness than to adjust to light fun fact: people who lack vitamin A often suffer from night blindness
So your eyes have time to adjust to the darkness.
Since these birds hunt at night (they are nocturnal animals) they have to adjust their eyes to the darkness. Having big pupils helps this. Why do they need to adjust? Well as I said these birds hunt at night, they need to see their prey in the exact spot its in.
My experience has been 2 to 5 days, depending on the change in prescription.
If you were in absolute darkness, like in a cave deep underground where light cannot reach, then no. You wouldn't be able to see anything because there is no light for your eyes to adjust to.
Maintenance of epithelial tissue; strengthens tooth enamel and promotes use of calcium and phosphorus in bone formation; growth of body cells; keeps eyes most (better eye sight); helps eyes adjust to darkness; possible aid in cancer protection. *Glencoe Health*
The ISBN of The Eyes of Darkness is 0-425-15397-5.