Resumen: Refraction techniques make it possible to determine the most appropriate sphero-cylindrical lens prescription to achieve the best possible visual quality. Among these techniques, subjective refraction (i.e., patient’s response-guided refraction) is the most commonly used approach. In this context, this paper’s main goal is to present a simulation software that implements in a virtual manner various subjective-refraction techniques—including Jackson’s Cross-Cylinder test (JCC)—relying all on the observation of computer-generated retinal images. This software has also been used to evaluate visual quality when the JCC test is performed in multifocal-contact-lens wearers. The results reveal this software’s usefulness to simulate the retinal image quality that a particular visual compensation provides. Moreover, it can help to gain a deeper insight and to improve existing refraction techniques and it can be used for simulated training. Idioma: Inglés DOI: 10.1371/journal.pone.0150204 Año: 2016 Publicado en: PLoS One 11, 3 (2016), e0150204 [15 p] ISSN: 1932-6203 Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2011-22496 Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2014-58303-P Financiación: info:eu-repo/grantAgreement/ES/UZ/UZ2011-CIE-02 Tipo y forma: Artículo (Versión definitiva) Área (Departamento): Optica (Departamento de Física Aplicada)