Bright eyes mean bright eyes.
eyes, also called eyes, eyes and tricks, are the organs that most animals receive light and form images in their brains. For human beings, it is a visual organ and one of the most important sensory organs. The eye is a very delicate organ, which can change its specific shape in different environments, so that human beings can obtain correct information in complex environments. The simplest eye structure can detect the light and shade of the surrounding environment, and the more complex eye structure can provide vision.
In many vertebrates and some mollusks, the eyes image by projecting light to the light-sensitive retina, where the light is received and converted into signals and transmitted to the brain through the optic nerve. Usually the eyes are spherical, filled with transparent gel-like substances, with a lens for focusing, and usually an iris that can control the amount of light entering the eyes.
Protecting the eyesight of eyes:
There is a very close relationship between human brain and eyes. Working, studying or playing all night will make the brain extremely tired. At this time, the optic nerve and the whole eyeball dominated by the brain will also be tired. If there is no sleep, the visual function will be disordered or declined because the optic nerve and eyeball can't rest, which will be accompanied by eye abnormalities such as corneal congestion, blurred vision and nervous tension. In addition, the long-term tense adjustment of the refractive system of the eyes will also cause myopia of the eyes.
Therefore, in order to protect your eyes, you should get enough sleep. If your eyes can't rest for a long time due to special circumstances, you should also shift your sight every hour or so (it is best to overlook it) to relax the refractive system of your eyes.