vision by the normal eye when it is adapted to levels of luminance less than some hundredths of a candela per square metre. Note – The rods are the principal active photoreceptors in scotopic vision. [IEC60050 IEV 845-02-10]
condition of vision in which there is discomfort or a reduction in the ability to see details or objects, caused by an unsuitable distribution or range of luminance, or to extreme contrasts [IEC60050 IEV 845-02-52]