We know, when we look at a baby rubbing his eyes, that he wants to sleep. Quite simply because this gesture is universal. In fact, it could just be a simple uncomfortable feeling that we would feel when our eye muscles have been working hard for a long time, and they need a break.
Thus, rubbing your eyes, or actively forcing yourself to close them, allows you to reconstitute one of the protective layers of the retina, the superficial lipid layer. In principle, blinking ensures its renewal, but in cases of fatigue, they become less frequent. The tear film is then altered and the eyes sting. By rubbing our eyes, we force the emptying of the meibomian glands which produce this film. This is how after this rubbing, we can see a small tear appear. This salty liquid is beneficial for replenishing the lipid film of the eye.
Rubbing your eyes is a bit like getting a massage after staying in an uncomfortable position for too long. This is particularly true for overly focused workers, or for babies, who blink less because they often look attentively at their surroundings. According to the Live Science website, they may only blink once a minute. No wonder they’re so dry. So, just as we sometimes sigh when we forget to breathe properly, the body can also forget to blink (…)
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