RT Conference Proceedings
T1 Effect of environmental luminance on contrast sensitivity in vehicle drivers.
T2 Efecto de la luminancia ambiental sobre la sensibilidad al contraste en conductores de vehículos.
A1 Del Moral Martínez, M.I.
A1 Sánchez Ramos, Celia
A1 Pérez Carrasco, María Jesús
A1 Puell Marín, María Cinta
A1 Langa Moraga, Antonio
A1 Pérez Pérez, J.M.
AB PURPOSE: To evaluate the effect of the luminance of the environment on contrast sensitivity (CS) in vehicle drivers.METHODS: CS was determined under photopic (100cd/m2) and mesopic (3cd/m2) conditions in 103 subjects (night eye) using the OPTEC 3500 instrument and the FACT test (for spatial frequencies of 1.5,3,6,12,18 cycles/º. Both photopic and mesopic CS were evaluated after a 5 min period of dark adaptation.RESULTS: Maximum photopic and mesopic CS values were recorded for a spatial frequency of 6 cycles/º. Under both luminance conditions, significant differences in CS were observed according to subject age and whether they had undergone cataract surgery CS diferences between the two levels of luminance were noted for all spatial frequencies expect 3 cycles/ºCONCLUSION: Photopic and mesopic CS are both-pass functions. Age shows a negative effect on mesopic and photopic CS. Higher driving frequencies were related to improved photopic CS for intermediate stimuli but these did not affect mesopic CS. Cataract surgery led to improved CS for intermediate spatial frequencies at both luminance levels. A reduced ambient luminance negatively affects CS in non-operated eyes.
YR 2004
FD 2004-09-28
LK https://hdl.handle.net/20.500.14352/108155
UL https://hdl.handle.net/20.500.14352/108155
LA eng
DS Docta Complutense
RD 7 abr 2025