Wang Xiaohong is 7 years old. Her parents gave her an iPad as a present for her birthday. She was very excited and played with the ipad every day. A month later, her eyesight decreased(下降)to 300 degrees. Thin is serious for such a young girl Many children in China are facing the same problem tablet(平板电脑)and ipad using is bringing problems to their eyesight. The problem is so common that newspapers even call the iPad the " No. I killer of children's eyesight".
"There are about 30 shortsighted(近视的)children coming every day, " said Hu Dali, an eye doctor at Guiyang Aier Eye Hospital " Half of those children have poor eyesight because they have played with phones and iPads for too long."
Doctors and scientists say children's eyesight is not yet fully developed and their eyes get tired more easily. The screen of an ipad uses a very bright LED backlight. If children look at an iPad screen too much, their eyes do not have time to rest. This will make their eyesight worse over time.
Doctors advise that users should hold their iPads between 40-60 centimeters away from them. The brightness of the screen should be comfortable for children. Children had better use iPads for less than one hour every day.
