2011
DOI: 10.1590/s0103-65642011005000003
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Comparación de dos test psicofísicos de sensibilidad al contraste en un entorno clínico

Abstract: El objetivo de este estudio fue comparar el desempeño de dos test psicofísicos de sensibilidad al contraste, uno basado en un sistema informatizado - FVC 100 - y otro en láminas impresas - VCTS 6500, ambos empleando la discriminación de redes sinusoidales en condiciones de adaptación fotópica. Fueron medidos 45 ojos de 23 personas con edades entre 28 y 70 años. Los sujetos fueron reclutados en un Servicio de Oftalmología al cual concurrieron tanto por consulta como por control. A partir de tomar el criterio cl… Show more

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Cited by 2 publications
(1 citation statement)
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“…A computer-based CS measurement system was used, previously described by Colombo and colleagues (Colombo E. et al, 2009). This system generates visual stimuli that were presented on a widescreen CRT monitor of 17'' modified with an attenuator to obtain a resolution of 13 bits, about 3500 grey levels after gamma correction (Pelli & Zhang, 1991).…”
Section: Apparatusmentioning
confidence: 99%
“…A computer-based CS measurement system was used, previously described by Colombo and colleagues (Colombo E. et al, 2009). This system generates visual stimuli that were presented on a widescreen CRT monitor of 17'' modified with an attenuator to obtain a resolution of 13 bits, about 3500 grey levels after gamma correction (Pelli & Zhang, 1991).…”
Section: Apparatusmentioning
confidence: 99%