医疗器械非相干光眼前节辐射危害研究

Study on the Anterior Segment Biohazard of Incoherent Light

非相干光辐射对眼前节的危害包括紫外辐射的光化学危害和红外辐射的热损伤危害,但是不同类型的光源对眼前节的损伤机理不同,在光辐射危害的评价测试过程中应有所区别。目前的光辐射评价标准对测试距离、测试孔径等条件没有统一明确的规定。本文结合目前光辐射危害分类标准,分析在不同测试条件下眼前节光辐射危害测试结果的差异性。最后通过实验分析发散光源和汇聚光源在不同测试距离和测试孔径的条件下,光辐射对眼前节危害测试结果。讨论不同类型光源对眼前节的危害随测试距离而变化的规律,并建议在眼前节光辐射危害评价中选取各光源最不利的位置,按照适用标准的测试孔径进行试验。

The effects of incoherent optical radiation on eyes section include photochemical harm of ultraviolet radiation and infrared radiation thermal damage. It is known that different types of light sources have different mechanisms for the damage mechanism, which should be treated as different in the process of the evaluation test of optical radiation hazards. However, there is no uniform rule for test distance, test aperture and other conditions of optical radiation evaluation criteria until now. Based on the current radiation hazard classification standard, this paper analyzed the differences of the radiation hazards under different test conditions. In the end, the test results were analyzed by means of the experimental analysis of the radiated light source and the convergent light source in different test distances and test aperture. Different types of light source, the harm of eyes day along with the test of distance and change rule were discussed. The most unfavorable position to select the light source in the optical radiation hazards evaluation of the front section was suggested, and test was performed according to the aperture experiment with the applicable standard test.