When people cry accompanied by changes in emotions, this will cause congestion of blood vessels, especially when people have eye rubbing action when crying, resulting in more obvious blood vessel congestion. Therefore, when crying, pay attention to: first, not to rub the eyes, rubbing the eyes will lead to the expansion of blood vessels filled, congestion increased. Second, after crying, you should quickly use cold towels or ice cubes to apply cold compresses to your eyes to lower the temperature of the eyelids and conjunctival tissues, so that the blood vessels can contract, reduce congestion and eliminate the symptoms of red eyes. Third, use eye drops that constrict the blood vessels, commonly used are naphthoid drops, which can be used 2-3 times to make the redness and congestion of the eyes subside, and 2-3 times at intervals of about half an hour, so that the symptoms of eyelid congestion can be eliminated more quickly. So avoid getting too emotional when crying and avoid rubbing your eyes so that the redness of your eyes will be lighter.