Robinson J, Moseley M J, Fielder A R
Department of Ophthalmology, University of Birmingham, Birmingham and Midland Eye Hospital.
Arch Dis Child. 1990 Jul;65(7 Spec No):679-82. doi: 10.1136/adc.65.7_spec_no.679.
We have measured the illuminance (brightness) of seven neonatal units during both the day and the night. When the units were lit solely by fluorescent tubes the mean illuminance was 348 lux (range 192-690). During the day the mean illuminance was 470 lux (range 236-905). The high dependency regions in four of the seven units were significantly brighter than the corresponding low dependency nurseries at all times. In two of these units there is a policy of reducing the amount of artificial light in the low dependency areas at night, and in these the normal mean illuminance was 50 lux. We have measured the general levels of illumination to which a neonate might be exposed; the ocular exposure to light of a neonate depends, however, on both physical and biological factors and more research is required before an accurate estimate can be made.
我们测量了7个新生儿病房白天和夜间的光照度（亮度）。当病房仅由荧光灯管照明时，平均光照度为348勒克斯（范围为192 - 690）。白天的平均光照度为470勒克斯（范围为236 - 905）。7个病房中有4个的高依赖区在任何时候都明显比相应的低依赖区更亮。其中两个病房有在夜间减少低依赖区人造光量的政策，在这些病房中，正常平均光照度为50勒克斯。我们测量了新生儿可能暴露于其中的总体光照水平；然而，新生儿眼部接受的光照取决于物理和生物因素，在做出准确估计之前还需要更多研究。
