If a patient’s eye vision has decreased to the point of no light perception, there is usually not much that can be done to treat it. The eye is an important organ of vision, capable of converting external optical stimuli into bioelectrical signals that are transmitted to the visual center of the brain, thus forming vision. Once the eye is damaged, such as trauma, glaucoma, inflammation, etc., resulting in damage to the structure and function of the eye, the patient’s vision may be affected. If vision loss has reached the point of no light perception, it means that the patient’s eyes have been significantly damaged and are generally more difficult to recover. If the patient’s vision has decreased, but still retains the sense of light, it means that some retinal nerve cells are still alive, and it is possible to partially restore vision by treating the primary disease and protecting the retinal function. It is recommended that patients with vision loss should consult a hospital in a timely manner to assess their condition and follow the doctor’s instructions for treatment.