The influence of spectral power distribution on contrast sensitivity

摘要: Departamento de Luminotecnia, Luz y Visio ´n, Universidad Nacional Tucuman,– Instituto Investigacio´n en Luz, Ambiente Visio´n, CONICET-UNT,Avenida Independencia 1800, 4000 Tucuma´n, ArgentinaReceived 12 November 2010; Revised 10 February 2011; Accepted 14 2011The influence of lighting different spectral power distribution on letter contrastsensitivity has been studied. The distributions wereobtained by filtering or dimming tungsten halogen lamps. Measurements weremade 20 young and healthy individuals (25 eyes) whose monocular contrastsensitivities were measured with a natural pupil. Sixteen combinations test andsurround luminance high low correlated colour temperatures werestudied in such way that the luminance, surround orcolour temperature both visual fields could be independently Both testluminance influenced contrast sensitivity but correlatedcolour did not.