Qingming is the name of a festival in China in which, among other things, families go to cemeteries to tidy up the graves of their deceased relatives. This includes not only cleaning them but also removing the weeds that grow around them.This last activity is what caused this woman's nightmare when she thought she had gotten 'a little dust' in her eye. Who has that not happened to?Like anyone, she thought that the speck of dust would end up coming out of her eye, so she did not give it much thought. She used all the usual techniques: blowing at it, pouring water in her eye... but nothing worked.The pain was increasing and, hours later, her eye would not stop tearing up and the discomfort began to be unbearable; so she decided to go to the doctor.The doctor used a powerful microscope to see her cornea... and when he adjusted the image, he could not believe what he saw. There was not one, but four of them. And they had legs and were moving.It is the first recorded case of the presence of these animals inside a human eye. Although they do not usually have parasitic behaviour, it seems that they were feeding on the salt of her tears.As you will see in the video, the images, broadcast in the Asian media, are shocking.