ISO 24157-2008 眼科光学器件和仪器.人眼的失常报告
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【英文标准名称】:Ophthalmicopticsandinstruments-Reportingaberrationsofthehumaneye
【原文标准名称】:眼科光学器件和仪器.人眼的失常报告
【标准号】:ISO24157-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-07
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC172
【标准类型】:()
【标准水平】:()
【中文主题词】:失常;对视力的帮助;坐标测量机;坐标系;定义;尺寸;眼;人;人体;图例;仪表刻度;仪器;解释;测量;医疗设备;眼科设备;眼科光学;眼科试验设备;眼科学;光学设备;光学仪器;光学;感知;个人保健;规范;测试;视觉敏锐度测验;视觉能力;波前
【英文主题词】:Aberration;Aidtovision;Coordinatemeasuringmachines;Coordinatesystems;Definitions;Dimensions;Eyes;Human;Humanbody;Illustrations;Instrumentscales;Instruments;Interpretations;Measurement;Measuringtechniques;Medicalequipment;Ophthalmicequipment;Ophthalmicoptics;Ophthalmictestequipment;Ophthalmology;Opticalequipment;Opticalinstruments;Optics;People;Perception;Personalhealth;Specifications;Testing;Visualacuitytestings;Visualfaculty;Wavefront
【摘要】:ThisInternationalStandardspecifiesstandardizedmethodsforreportingaberrationsofthehumaneye.
【中国标准分类号】:C32
【国际标准分类号】:11_040_70
【页数】:36P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforDescribingSystemOutputofImplantableMiddleEarHearingDevices
【原文标准名称】:可植入中耳的听觉设备的描述系统输出的标准实施规程
【标准号】:ASTMF2504-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:F04.37
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:耳;听力;中的;输出;系统输出
【英文主题词】:electromechanicalhearing;hearingimplant;IHD;implantablehearingaid;implantablemiddleearhearingdevice;IMEHD;laserinterferometry;middleear;middleearimplant;systemoutput;systemperformance;temporalbone;transferfunction;vibrational
【摘要】:IMEHDsarealternativestoairconductionhearingaids.Theyaresimilartoairconductionhearingaidsinthattheyprocessincomingsoundbyapplyingfrequencyshapingandcompressiontocreateananalog,vibratoryaudiofrequencyoutput.IMEHDsdifferfromhearingaidsinthattheydonotcreateanairborneacousticaloutputsignalwithanelectroacousticaloutputtransducerintheexternalearcanal,butratheramechanicalstimulationthatresultsinthevibrationofthecochlearfluid.Therefore,theIMEHDoutputsignalisnotreadilyaccessibleafterimplantationinthewayhearingaidoutputisaccessiblewithreal-earprobemicrophonemeasurements.Differentdeviceswillusedifferentmethodsofcouplingtotheossicularchainorcochlea.Thismakesitdifficulttodesignauniformmodelofthemiddleearinthewaythe2-cm3couplerisusedasamodeloftheexternalearcanalwithconventionalhearingaids.Thispracticeprovidesuniformityofdatacollectionpractices,thusallowingIMEHDinvitroperformancestobeevaluatedandreadilycompared.Onceclinicaldataareavailable,theperformancespecificationscanbeaugmentedwithcorrespondingtransferfunctionsorresultsfrommeasurementsinpatients.Thetemporalboneisawell-acceptedmodelthatrelatescloselytothebiomechanicsofthelivingmiddleear,whichisreadilyrelatabletohearinglevel.LaserDopplervibrometryprovidesaccuratevelocitymeasurementsintherangesrequiredforhumanhearing.1.1Thispracticedefinesmeansfordescribingsystemperformance(exvivo)and,inparticular,systemoutputofanimplantablemiddleearhearingdevice(IMEHD)bymeasuringaphysicalquantitythatisrelevanttotheinsertiongainandoutputleveloftheIMEHDwhenimplantedinthepatient.1.2Thispracticeissimilartoheadphonecalibrationonanartificialearinwhichthesoundpressurelevel(indecibelsoundpressurelevel(SPL))measuredintheartificialearcanbeconvertedtopatienthearinglevel(indecibelhearinglevel(HL))usingaknowntransferfunction,asdefinedbyANSI3.7.Thesemeasurementscanthenbeusedtopredictsystemparametersrelevantforpatientbenefitsuchasfunctionalgain,maximumoutput,andvariability.Measurementsdefinedinthispracticeshouldbeusefulforpatients,clinicians,manufacturers,investigators,andregulatoryagenciesinmakingcomparativeevaluationsofIMEHDs.1.3ThevaluesgiveninSIunitsaretobeconsideredthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C35;C32
【国际标准分类号】:11_180_15
【页数】:6P.;A4
【正文语种】:
【英文标准名称】:Photographicgradebenzotriazole;Specification
【原文标准名称】:照相级苯并三唑.规范
【标准号】:ISO3618-1976
【标准状态】:作废
【国别】:国际
【发布日期】:1976-05
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC42
【标准类型】:()
【标准水平】:()
【中文主题词】:化学制品;试验;材料规范;照相药品;摄影材料;苯;苯并三唑;摄影
【英文主题词】:photography;materialsspecification;materialsspecifications;chemicals;benzene;testing;tests;photographicchemicals;photographicmaterials;benzotriazole
【摘要】:
【中国标准分类号】:G85
【国际标准分类号】:7740
【页数】:4P;A4
【正文语种】:英语
