How long does the oxygen permeability of 1 1dk last?

Oxygen permeability 1 1dk penetrability 1 hour. Oxygen permeability 1 1dk is safe, but unhealthy. Below 24dk/t, people will be deprived of oxygen, just as people need to breathe and their eyes need it. Think about what will happen if people lack oxygen? The human eye will also lack oxygen, leading to complications. Wear at most 1 hour.