The eyes, which are the main senses for people to get light, color and image information. It is the consensus of people that they should care for their eyes. It is because of the preciousness of the eyes that people usually talk about caring for precious things, “like caring for the eyes”. It is the desire of people to take care of their eyes, but because of the role of eyes in our lives, it is easy to ignore the issue of eye protection. Moreover, how to take care of the eyes and how to take appropriate methods to take care of the eyes is a problem that few people have seriously considered. The eyes, like other organs of the body, need protection not only when they are sick or have problems, but also under normal conditions, they should be protected and cared for at all times. The eye is a complex, sophisticated and special organ, and the use of the eye cannot be increased or decreased under conscious control, as is the case with our limbs. This characteristic makes it difficult to protect the eyes, while on the other hand, the eyes, as a special organ, have a strong self-regulatory effect and usually react to various states, allowing them to protect themselves, which is why people neglect to take the initiative to protect them. In eye health care, we often talk about eye fatigue and rest, and generally speaking, it is very normal to need rest when you are tired. But what is eye fatigue? And how can we give our eyes adequate rest? Our eyes can cope with a variety of complex environments, such as light and darkness, distance, image changes, object movement, colorful colors, and all the world’s phenomena, all of which we can feel through our eyes. The reason why the eye can achieve this complex function is that the eye can not only feel the signal of light, but also make precise adjustments according to the need to feel different environments, and this precise adjustment system is complex. In general, the eyes do not get fatigued, or rather, because they are constantly adjusting and moving every moment under natural conditions, they do not make people feel fatigued. In other words, under normal circumstances, the eyes are not easily fatigued. Of course, the eyes can be fatigued, for example, when observing in one posture for a long time, there may be fatigue. This is like standing still in place is more likely to make the legs fatigue than constant activity: the muscles of the eyes can also feel fatigue. Fatigue is not a harmful factor, the reason for the harm is the way to deal with fatigue. The muscles of athletes are developed because they improve their function through proper exercise and fatigue, recovery and rest. Therefore, eye protection should also take a positive approach and treat fatigue in a reasonable manner. Keeping the eyes in proper motion is a better way to rest than simply standing still. The movement of the eye is complex. Adjusting the distance of observation is one type of movement, responding to the intensity of light is another type of adjustment, following a moving object is another type of movement, and the movement of the eye is more complex than the movement of other organs of our body. This complex movement actually regulates the function of the eye in a comprehensive manner. It is an interesting phenomenon that Peking Opera actors often express certain feelings by moving their eyes during performance, and actors who practice this type of eye movement for a long time usually have less symptoms of orbital collapse in old age, which is probably related to the eye movement exercise. Therefore, we should not only protect our eyes by simply considering fatigue and rest, but more importantly by scientifically allowing the eyes to function in exercise to achieve true rest – just as an athlete cannot get the best performance by lying down to rest, unreasonable rest is not loving care. For many years, we have promoted eye exercises for young people, starting in kindergarten. However, our children have been doing eye care exercises seriously while increasing the number of glasses, and decades have passed, and we have more and more little glasses in our schools. We cannot help but consider the appropriateness of the way we protect our eyes. Muscle fatigue can be properly relieved by massage, but it is never possible to get strong muscles and good function by massage. So can the eyes be an exception? It seems that eye protection is indeed a complex scientific issue and one that we do not yet fully understand, and there are even many misconceptions. The answer is yes, but we also need to discuss a little knowledge about drugs. Drugs are simply substances that can regulate the body’s functions and treat diseases. Since drugs can regulate the functions of the body, they also include the functions of the eyes. However, we must be clear that the main role of drugs is to treat diseases, and we will discuss the drugs for eye diseases separately. So what is the relationship between eye protection and medications? The following points should be noted: proper supplementation of nutrients. Vitamin A is a light-sensitive substance in the eye, and when vitamin A is deficient, you will not be able to see when the light is low, resulting in “bird blindness”. In fact, when vitamin A is deficient, it can cause a variety of eye-related disorders, including dry eyes, increased eye discharge, easy eye fatigue, and other symptoms. Vitamin B2, also known as riboflavin, can cause vision loss, tearing and congestion. The eye is one of the organs with the highest volume and frequency of movement, and the eye itself has good lubrication and movement protection measures. When appropriate, especially when the eye is in a dry environment and the eye is applied in a relatively stable state for a long time, topical eye products can be taken to assist in health and movement to achieve the purpose of eye protection. Of course, as a part of the body, the eyes are inseparable from the overall health of the body, and the health of the body is a prerequisite for achieving healthy eyes. However, because the eyes are a very small and special part of the body, in some cases, the overall regulation often does not achieve the purpose we need, for example, drugs specifically for the eyes, if taken orally, the amount that reaches the eyes will be very small and will not achieve the desired effect. This makes topical eye medication an important measure to treat eye diseases and protect the eyes. We should take care of our eyes, use our eyes scientifically, and protect our eyes scientifically, so that we can have bright eyes and a wide field of vision, so that we can see the world clearly and see things in detail, and live in a beautiful environment.