Wavefront-Guided Laser Treatment Using a High-Resolution Aberrometer to Measure Irregular Corneas: A Pilot Study

PURPOSE: To evaluate in a pilot study the visual, refractive, corneal topographic, and aberrometric changes after wavefront-guided LASIK or photorefractive keratectomy (PRK) using a high-resolution aberrometer to calculate the treatment for aberrated eyes. METHODS: Twenty aberrated eyes of 18 patients undergoing wavefront-guided LASIK or PRK using the VISX STARS4IR excimer laser and the iDesign aberrometer (Abbott Medical Optics, Inc., Santa Ana, CA) were enrolled in this prospective study. Three groups were differentiated: keratoconus post-CXL group including 11 keratoconic eyes (10 patients), post-LASIK group including 5 eyes (5 patients) with previous decentered LASIK treatments, and post-RK group including 4 eyes (3 patients) with previous radial keratotomy. Visual, refractive, contrast sensitivity, corneal topographic, and ocular aberrometric changes were evaluated during a 6-month follow-up. RESULTS: An improvement in uncorrected (UDVA) and corrected visual acuity (CDVA) associated with a reduction in the spherical equivalent was observed in the three groups, but was only statistically significant in the keratoconus post-CXL and post-LASIK groups (P ≤ .04). All eyes gained one or more lines of CDVA after surgery. Improvements in contrast sensitivity were observed in the three groups, but they were only statistically significant in the keratoconus post-CXL and post-LASIK groups (P ≤ .04). Regarding aberrations, a reduction was observed in trefoil aberrations in the keratoconus post-CXL group (P = .05) and significant reductions in higher-order and primary coma aberrations in the post-LASIK group (P = .04). CONCLUSIONS: Wavefront-guided laser enhancements using the evaluated platform seem to be safe and effective to restore the visual function in aberrated eyes.

La elaboración de las guías docentes del tercer curso del grado de Historia

La Red de guías docentes para el tercer curso del grado de Historia se creó con el objetivo de elaborar las guías docentes de las asignaturas que se impartirán por vez primera a lo largo del próximo curso 2012-2013 en el mencionado grado. Se planteó como un punto de encuentro que permitiera una coordinación en la distribución de contenidos, y una coherencia en cuanto a las metodologías docentes y evaluadoras que se impartirán en las distintas asignaturas, consensuando un marco didáctico que garantizase su correcta aplicación, así como la consecución de los objetivos competenciales establecidos en la memoria del grado. Para ello nos hemos basado en la experiencia derivada de la realización de las guías de cursos anteriores y de la experiencia personal de los profesores que han impartido docencia en los nuevos estudios de grado, que nos han hecho partícipes de las diferentes problemáticas surgidas de la aplicación de las guías docentes y de las opiniones y necesidades del alumnado. Todo ello ha servido para introducir mejoras y planificar las distintas actividades docentes a partir de la realidad académica en la que nos encontramos.