不同海拔地区眼部生物有效紫外辐射的差异研究

Differences in Ocular Biologically Effective Ultraviolet Irradiance at Different Altitudes

目的探讨不同海拔的西昌和绍兴地区眼部暴露生物有效紫外辐射强度的差异,为眼紫外线防护提供依据。方法采用自行研制的旋转式眼紫外线暴露模型,在晴好天气下,分别在西昌和绍兴进行监测。运用AvaSoft 7.4 for USB2软件和OriginPro 8.0软件进行数据分析和处理。结果西昌和绍兴眼部生物有效紫外辐射暴露强度的日间变化呈双峰分布,西昌角膜、结膜和晶状体的加权UVBE最大值分别是绍兴的1.7倍、近2倍和1.8倍。相同太阳高度角下,西昌角膜、结膜、晶状体生物有效强度均高于绍兴。结论不同海拔两地区的眼部生物有效暴露强度的日间变化均呈双峰分布。相同太阳高度角下,其角膜、结膜和晶状体的生物有效紫外线强度存在明显差异,西昌均高于绍兴。

Objective To explore the difference in ocular biologically effective ultraviolet irradiance in two areas with different altitudes ,Xichang and Shaoxing, and provide a reference basis for ocular UV protection. Methods A self-designed rotating mannequin and dual-detector spectrome- ter were used to monitor the intensity of ocular exposure to UV irradiation under clear skies in Xichang and Shaoxing. Monitoring data were pro- cessed and analyzed with AvaSoft 7.4 USB2 software and OriginPro 8.0 software. Results The diurnal variations of ocular biologically effective ul- traviolet irradiance exhibited bimodal distribution in Xichang and Shaoxing. The maximum UVBEcom, UVBECOnj, and UVBElens of Xichang were about 1.7 times, 2 times, and 1.8 times that of Shaoxing, respectively. Under the same solar elevation angle, the biologically effective ultraviolet irra- diance of the cornea, conjunctiva, and lens in Xichang were higher than those of Shaoxing. Conclusion The diurnal variations of ocular biologi- cally effective ultraviolet irradiance exhibit bimodal distribution in areas at two different altitudes. Under the same solar elevation angle, the biologi- cally effective ultraviolet irmdiance of the cornea, conjunctiva, and lens of Xichang are significantly higher than those of Shaoxing.