How is pupil big to return a responsibility

summary

Pupil dilation is how to return a responsibility. Many times, some people's pupils dilate. The most common is that when we see what we like, our pupils will also dilate unconsciously, because after all, we see what we like. But in peacetime, why our pupils will also enlarge, this is the reason. But many times, the occurrence of some diseases is also accompanied by the symptoms of pupil dilation, at this time, it is necessary to arouse people's attention. So, how is pupil dilation going on? Let's have a look.

How is pupil big to return a responsibility

First: first of all, the pupil to light reflection, corneal reflection disappeared, but when people are excited by external stimulation, the pupil will expand. In daily life, people are most exposed to the diffusion of the pupil in the detection of vision. Sometimes it is also an instinctive protective response of the body, and sometimes it can also guess a person's psychological life through the change of the pupil Move.

Second: if we say that under normal circumstances, the pupil is a contractible hole in the iris of the eye, whether it expands or shrinks, it is round. The pupil can not only respond to light and shade, adjust the light entering the eye, but also affect the depth of focus and spherical aberration of the eye optical system.

Third: the pupil itself will adjust its size according to the intensity of external light. When the light is strong, the pupil will become smaller. When the light is weak, the pupil will become larger. This is the self-protection of the eyes. When the light is strong, the pupil will shrink automatically, and when the light is dark, it will expand. If the pupil of this light response is slow or disappear, it means that death will be imminent.

matters needing attention

It should be noted that the pupil will be afraid of light after dilation, so during the period of dilation to avoid strong light stimulation, especially sunlight stimulation, should reduce outdoor activities and wear sunshade hat. During mydriasis due to blurred vision, can not see clearly, to pay attention to care, in order to avoid injury. During mydriasis, close eye use should be reduced as much as possible. I hope it can help you.