The easiest way to identify oculocerebral and myocerebral is to cover one of the baby’s eyes with something for a certain period of time (at least 20 minutes) and observe whether the baby’s head is righted or improved. If the baby’s head is not tilted after covering one eye, you can basically be sure that it is the eye that is the cause and you can take the baby to the ophthalmology examination for a clear diagnosis. The masking test can also determine the effect of correction after surgery. One of the easiest ways we usually identify whether a child’s head is crooked due to ophthalmic strabismus is to cover one of the child’s eyes with gauze, and if the child’s symptoms of crooked head reduce or disappear after covering, you should be highly alert to compensatory head position caused by congenital strabismus.