Squint blocks one eye and it doesn't squint.

The most common type of this symptom described by you is called intermittent exotropia. That is to say, because there is a difference in the diopter of the two eyes, generally one eye has normal diopter and normal eye rubbing vision. In addition, one eye shows refractive error, and the difference in diopter exceeds the other eye by about 150 degrees. If it is more than 150 degrees, it will show that one eye is blocked and the other eye shows strabismus. A symptom of recovery. This is called intermittent exotropia, but since the unaided vision of an ametropic eye is relatively low, when both eyes see things at the same time, it cannot form effective fusion vision, and the brain will automatically use this eye with clear vision and give up another ametropic eye with unclear vision, resulting in exotropia of the other eye. Therefore, when this effective eye, the ametropic eye without power, is covered, When using the strabismus eye alone, he will walk from the abnormal position to the normal position, and drive a function of the resistance eye. Therefore, when the normal eye is covered, the strabismus eye will return to normal. If the normal eye is covered, the normal eye will become the dominant eye when the normal eye is used, and the strabismus eye will show strabismus again. This situation requires a refractive correction treatment for the eye. First, after correcting the refractive error of the glasses, do some fusion training. If conservative treatment, correction, fails to achieve effective results, eye surgery can be performed to slightly adjust the eyes to alleviate the intermittent exotropia symptoms.