When the sun's rays penetrate the fundus retina through the lens, as long as the heat energy of the sun's rays is concentrated to a certain extent within a certain period of time, the eyes will feel stinging and the objects in front of them will not be clear, and it will take a long time to return to normal.

When this stimulus is too strong, people's retina will be burned, causing permanent damage to their vision. Our human eyes are very fragile, and the energy of the sun's rays is very huge, so even looking straight for just a few seconds will cause great discomfort, and in severe cases, it will lead to blindness.

Extended data

Protective measures:

In our daily life, we need to protect our eyes. In a well-lit environment, use the correct eye posture at the right time. At the same time, keeping enough sleep can adjust the blood circulation in our cerebral cortex in time. When you feel tired, you can close your eyes or drop eye drops. You can eat more fresh vegetables and fruits in your diet.

The eyes are the windows to the soul. Having a pair of bright eyes can add a lot of colors to our lives and perceive everything in the world. Avoid looking directly at the sun, avoid all behaviors that are not conducive to protecting our eyes, and have a pair of bright eyes, so that we can live more wantonly.