In developed societies, amblyopia (i.e. lazy eye) is a leading cause of permanent vision loss under the age of 30. A research team implemented an electrophysiological method that recognizes the presence or lack of binocularity in children as young as six months of age. The method is also capable of identifying other childhood visual disorders that may potentially lead to amblyopia after age 3.The test is based on dynamic random dot stereograms requiring two eyes to recognize a hidden object within the noise. Movies are generated on a laptop or tablet. In contrast to other static stereo tests, the perception of the 3D objects becomes more difficult, even for those who suffer from mild disorder. The results show that minor refractive errors and hidden squints can be identified easily.