be on the alert

Why eyes are not afraid of heat in summer and cold in winter is really worth discussing. It can be said that the eyes are an important part of the five senses, and their composition is also very complicated. In addition to eyeballs and eye patches, there will also be eye skin to deeply protect the conjunctiva. There are more nerves on it, which can sense the pain of eyes and feel the discomfort of eyes. In fact, when stimulated, eyes will shed tears, but they will not feel cold or hot.

The nerve control sense of the eyes can know the change of temperature, and can also relieve the cold and warm of nerve tissue. There is no heat dissipation in the eyes, so these structures will not harm the eyes even in cold places. Similarly, the existence of eyelids will also play a great protective role for the eyes. When the eyes are injured, the eyelids will be closed unconsciously, which will block many disasters for the eyes. If you keep providing heat to your eyes, your eyes won't feel anything in this environment.

From this aspect, I can also feel that the eyes are a particularly insensitive place. When the environment changes or the temperature changes, the eyeball will also feel indifferent. Perhaps this is a very dull phenomenon, but we should protect our eyesight besides being hot and cold. When the eyesight is tired, it will also bring fatigue to the eyes. Especially the developing teenagers, it is imperative to protect their eyes.

Man is a magical existence, and every part has its meaning. There are no blood vessels in the eyes, so a lot of heat will be released through blood circulation. The cold process will not reach the eyes, but it will produce feelings in the brain. With the development of the times, many children also like watching TV, which leads to faster and faster myopia. Although our eyes are strong, we should protect them and take preventive measures so that we can have a healthy condition.