A procedure (200) implemented by computer to generate a radial alignment guide for use in displaying the correct rotational orientation for an toric intraocular lens to be placed in one eye, according to an angular value calculated before a surgical procedure, comprising: collecting (202) preoperative alignment data in relation to a pupil of an eye that is not dilated, including preoperative alignment data including an angular value for the toric intraocular lens and angular locations of reference marks or reference points； store preoperative alignment data in a memory； locate (206) the center of the pupil from an image taken from the eye by a camera while it is dilated using image analysis software； and visualizing (208) the radial alignment guide as a sphere or radial grid in an intraoperative image of the dilated eye relative to the center of the dilated pupil, and placing the grid or sphere, which comprises superimposing an axis of the toric intraocular lens, crossing the superimposed axis the center of the sphere, the angular value of the superimposed axis being in reference to the axis of 0 to 180 ° of the superimposed sphere and, superimposing axes that cross the center of the sphere and other reference points or anatomical reference marks in the vessels of the limbus or the periphery of the iris of the eye as reference points.Un procedimiento (200) implementado por ordenador para generar una guía de alineación radial para su uso en la visualización de la orientación rotacional correcta para una lente intraocular tórica que va a colocarse en un ojo, según un valor angular calculado antes de un procedimiento quirúrgico, que comprende: recopilar (202) datos de alineación preoperatorios en relación a una pupila de un ojo que no está dilatado, incluyendo los datos de alineación preoperatorios un valor angular para la lente intraocular tórica y ubicaciones angulares de marcas de referencia o puntos de referencia； almacenar los datos de alineación preoperatorios en
