Search results for "polarimetría"
showing 3 items of 3 documents
Development of a polarimetric based optical biosensor using a free standing porous membrane
2013
The first published paper entitled Birefringent porous silicon membranes for optical sensing presents the results of the investigation on free standing silicon membranes prepared from p-type (110) surface oriented silicon as a material for optical biosensing. The birefringence and sensitivity of this type of porous membrane is theoretically simulated using the Bruggeman model which is extended to incorporate the influence that silicon oxidation has on both birefringence and sensitivity. Using this extended theoretical model a good agreement is found between the measured sensitivity values and the theoretical ones. The final section of this chapter describes the development of a statistical …
Relationship Between Visual Field Sensitivity and Retinal Nerve Fiber Layer Thickness Measured by Scanning Laser Polarimetry and Optical Coherence To…
2009
Purpose: To evaluate the correlation between automated achromatic perimetry (AAP) and the output of two retinal nerve fiber layer (RNFL) analysers: scanning laser polarimetry (GDx-VCC) and optical coherence tomography (OCT). Methods: Quantitative RNFL measurements with GDx-VCC and Stratus-OCT were obtained in one eye from 52 healthy subjects, 38 ocular hypertensive (OHT) patients and 94 glaucomatous patients. All patients underwent a complete examination, including AAP using the Swedish interactive threshold algorithm (SITA). The relationship between RNFL measurements and SITA visual field global indices were assessed by means of the following methods: analysis of variance, bivariate Pearso…
Coroideremia: seguimiento durante un año con polarimetría láser
2008
espanolCaso clinico: Presentamos el seguimiento de un caso de coroideremia que fue sometido a tres campos visuales automatizados blanco-blanco y tres polarimetrias laser (PL) con GDx VCC en el transcurso de un ano. Se encontro un deterioro perimetrico en indices y escotomas. En concordancia, los parametros de retardo de la capa de fibras nerviosas de la retina y los mapas cambiaron en un analisis serial avanzado con GDx VCC en los dos ojos. Discusion: El analisis con GDx VCC puede ser un metodo objetivo y cuantitativo para evaluar la progresion de las distrofias coriorretinianas como la coroideremia. EnglishCase report: We report the follow-up of a case of choroideremia who underwent three …