“…But the use of auxiliar devices may be helpful to determine the iris orientation. Several tools have been described in the scientific literature, such as: the use of a pupillometer, a plastic strip template, a millimeter rule, an ocular locator and fixed caliper, inverted anatomic tracings, a Boley's gauge, a transparent graph grid, computer simulation approach with optical scanning technique, computer-aided design, a customized scale and also pupillary distance ruler (Bhochhibhoya, et al, 2019;Manvi & Ghadiali, 2008;Malik, et al, 2014).…”