There is a saying that we should cherish our eyes like we love them. Undoubtedly, the eye is fragile, but the optic nerve is even weaker compared to it. In hospital emergency rooms, we often see patients who are unconscious due to trauma, and patients who cannot open their eyelids due to redness and swelling of the skin laceration of the eye. For them, saving lives and treating bleeding wounds become the most urgent issues, attracting most of the attention of doctors and patients and their families. As the vital signs recovered and the eye redness and swelling subsided, some patients suddenly realized: Huh? Why can’t I see out of this eye? This is what this article is about – optic nerve contusion, which comes on quietly without people being aware of it. The eye is the window to the soul, through which the beauty of the outside world passes, along the optic nerve and through the long optic nerve canal inside the orbital bone to our brain. When the eye is traumatized, a violent shock can cause the fragile optic nerve to move relative to the bony optic canal, resulting in a contusion, or the trauma can directly damage the optic canal and spill over into the optic nerve. Without optic nerve conduction, even the most beautiful scenery will pass in front of our bright eyes. To make matters worse, the optic nerve is different from the nerves that innervate our fingers and toes – once it is necrotic, it cannot be regenerated! That’s why eye transplantation has become a worldwide problem. Fortunately, medical scientists have discovered that in the early stages of optic nerve contusion, optic nerve fibers that have not yet been damaged by necrosis can maintain their function with timely treatment. Although the treatment is complex, closely monitored by physicians, and in some patients not very effective, this discovery is still significant. But only if the presence of an optic nerve contusion is detected in a timely manner. This reminds us to never forget the examination of the most basic function of the eye – the visual acuity. Timely detection will allow early treatment and seize the last chance given to us by the gods of fate.