Focus / APP for preventing myopia

The abuses of smart phones and tablets cause serious myopia problem, especially for children. Focus provides an innovative solution to deal with the modern problem. It is an APP that can alert the distance between the eyes and the screen. The front camera of the phone or tablet can engage its focus function in order to detect the distance between the eyes and the camera. When users watch the screen too close, its display will turn into blur. Only the users pull away the screen, the display can be shown normally. Therefore, it can avoid users close watching and prevent the disease of myopia.