激光辐射对人眼的危害 中英版

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1、激光辐射对人眼的危害中英版导读：就爱阅读网友为您分享以下“激光辐射对人眼的危害中英版”资讯，希望对您有所帮助，感谢您对92to.com的支持!激光辐射对人眼的危害TheharmsofLaserradiationtohumaneyes由于激光的特性，可使能量在空间和时间上高度集中。通过眼的屈光介质聚焦在视网膜上形成影像，104～105；激光单色性好，在眼底的色差小。上述特点致使极低的激光能量照射即可引起眼角膜或视网膜的损伤。Becausethecharacteristicoflaser,itcanmakee

2、nergyhighlyconcentratedinspaceandintime.Throughtheeye’srefractingmediathatfocusingonretinatoformanimage,thentheincidentenergydensityonretinacanincrease104～105thantheincidentenergydensityoncornea;Themonochromaticityoflaserisgood,andthechromaticaberrationis

3、smallontheocularfundus.Theabovefeatures14cancausethedamageofcorneaorretinabyverylowlaserradiation.不同波长激光眼损伤部位Theinjuredpartofeyesbydifferentwavelengthlasers.波长分区WavelengthDivision紫外激光波长范围(nm)WavelengthRange(nm)180-400主要损伤部位MianInjuredPart角膜、晶状体Cornea,lens

4、视网膜、脉络膜Retina,choroid视网膜、脉络膜、晶状体Retina,choroid,lensUVlaser可见激光Visiblelaser近红外激光400-700Near-infraredlaser中、远红外激光mid-infraredlaser,farinfraredlaser700-14001400-106角膜cornea眼底对几种激光的有效吸收率Theeffectiveabsorptivityofseverallasersbyocular14fundus.波长(nm)介质透过率有效吸收率激

5、光器Laser钕激光Neodymiumlaser红宝石Ruby氩离子ArgonionTransmissionEffectivewavelengthabsorptivity(%)(nm)media(%)absorptivity(%)吸收率(%)106412425.04694.4488-5145670968053.756倍频FrequencydoublingNd:YAG包括视网膜色素上皮和脉络膜的吸收Includingtheabsorption/absorptivityofretinochromeepithe

6、liumand14choroid.激光损伤事故的主要症状Themainsymptomofinjuryaccidentbylaser.事故发生时，多数受伤者感到眼前突然闪光，继而出现一个不同颜色、不同大小的光斑或暗影，个别人眼部有冲击感，与此同时，视力出现不同程度的下降，重者短时间内不能分清眼前物体，有的伤后出现数小时的目弦及畏光。Whentheaccidenthappens,mostofwoundedpersonsfeelthatflashsuddenlyappearbeforetheireyes,the

7、nappearafaculaorshadowofdifferentcolouranddifferentsize,fewpeoplefeelsimpactoneyes.Atthesametime,theirvisiondeclineindifferentdegrees.Severecasescannotseeobjectsbeforetheireyesclearly,somepeopleappearsdizzyandphotophobiaformanyhoursafterinjured.激光眼事故损伤照射统

8、计Thestatisticsofeyes’injuryaccidentbylaserradiation.受伤人数Numberofinjuredpeople1损伤眼次Numberofinjuryoneyes1532748865激光器Laser发射方式Radiationpattern超短脉冲波长wavelength14（nm）Nd：YAGUtrashortpulse巨脉冲1064Nd：YAGGiantpulse巨脉冲1064232