Resumen
Bi-tube optometric system for the measurement of binocular vision. A system is described which, being light and transportable, makes possible the measurement and treatment of binocular vision. The system consists of two tubes mounted on the plane of a circular scale and horizontally separated by a bar of variable length depending on the interpupillary distance. The measurement of the angle formed by the two tubes allows the measurement of the possible binocular anomaly. (Machine-translation by Google Translate, not legally binding)