Abstract:Objective To determine the impact of different testing conditions on the evaluation of blue light biohazard on the retina
and product classification. Methods In combination with the classification standard of light radiation hazard, the biomechanism
of retinal bluelight hazard was analyzed. Blue light hazard on the retina from UV light and LED light was tested under different
conditions separately (including distance, aperture stop, field stop). Results Blue light containing UV component generated more
hazard on aphakic eyes (infants less than 2 years old) than regular eyes, which would probably change classification results, while
lower UV proportion didn’t show significant impact. The testing device didn’t change the luminance of the light source. The difference of testing condition only changed the selected range of radiant angle and area with different results. Conclusion The
difference of testing conditions has impact on radiant exposure, but in general, it doesn’t change classification results. To assure the
accuracy of radiant exposure measurement, appropriate experimental condition should be selected based on the actual circumstance
of light sources following the most unfavorable rule.
孟祥峰,李宁,刘艳珍,王浩,任海萍. 医疗器械非相干光视网膜蓝光辐射危害研究[J]. 中国医疗设备, 2017, 32(9): 1-5.
MENG Xiangfeng, LI Ning, LIU Yanzhen, WANG Hao, REN Haiping. Study on the Biohazard of Incoherent Blue Light from Medical Device on the Retina. China Medical Devices, 2017, 32(9): 1-5.