简介：AIM:Todeterminethenormativevaluesofwhite-towhitecornealdiameterwithOrbscanIITopographySystemandtocomparerightandlefteyesdatainthenormalyoungpopulation.METHODS:Atotalof1001healthyparticipantsaged18-45yparticipatedinthisobservationalcross-sectionalstudy.Thestudypopulationconsistedof616femaleand385malesubjects.ThecornealdiameterwasmeasuredwiththeOrbscanII.Thedifferencesbetweengenders,betweenrightandlefteyesandage-relatedchangeswereevaluated.StatisticalanalyseswereperformedusingStudent’st-test.RESULTS:Theaveragewhite-to-whitedistanceinourstudypopulationwasrecordedas11.65±0.36mm(median:11.60mm,mode:11.70mm,minimum:10.50mmandmaximum:13.60mm).Thewhite-to-whitedistancewas11.60±0.35mminmalesand11.71±0.36mminfemaleswhichwasstatisticallydifferentbetweengenders(P<0.01).However,white-to-whitedistancewasnotstatisticallydifferentbetweenrightandlefteyes.Inaddition,thisparameterdecreasedwithincreasingage.Considering95%confidenceinterval,cornealdiameterlessthan10.93mmandgreaterthan12.34mmwouldbeconsideredasmicrocorneaandmegalocornea,respectivelybasedonthisstudypopulation,usingtheOrbscanIItopography.CONCLUSION:DetaileddescriptionandanalysisofcornealdiameterwithOrbscandemonstratethattheobtainedaveragevalueofhorizontalwhite-to-whiteishigherinmalethanfemaleanddecreasesslightlywithincreasingage.Ourdataalsosuggeststhecutoffvaluesfordefinitionofmicrocorneaandmegalocornea,whichcanbeemployedwiththispopulation.

简介：目的：研究如何将诱发电位技术应用于视力的客观评定。方法：视力范围0．1～1．5志愿合作受试者共180眼，运用模式翻转视觉诱发电位（PRVEP）技术检测与记载各受检眼各不同信号视角条件下的结果，探究可靠的检测指标。应用SPSS软件对收集数据作统计学处理和分析。结果：确定最小信号视角是客观评估视力的基础，选定P100波幅作为视力量化评价指标。通过对一定条件下P100波幅与视力表视力进行简单相关回归分析，显示二者呈正相关。结论：最小信号视角、P100波幅可作为确切的检测指标。

简介：眼反应分析仪（reichertocularresponseanalyzer，ORA）是一种新型非接触喷气式眼压计。它利用一种动态双向压平过程测量眼压，不仅使测得的眼压值真实可靠，免受中央角膜厚度和硬度的影响，而且可得到反应角膜生物力学特性的新指标：角膜滞后量和角膜阻力因素。其操作简单，能自动显示眼压读数及角膜生物力学特性。该仪器精确度高，可重复性好，非接触特性，因此可广泛用于临床监测眼压，尤其适用于已行准分子激光角膜屈光手术后的患者，但仍需进一步明确其对青光眼诊断和治疗的指导作用。

简介：目的：分析《标准对数视力表》与《低视力视力表》对远用视力检查的临床意义及临床价值。方法：随机抽取本院验光部验光患者59例（118眼）,每位患者分别进行两种视力表的远用视力检查,然后记录裸眼视力以及矫正视力检查结果,再进行配对设计资料检验。结果：裸眼视力检查t=2.9944,矫正视力检查t=3.5564,P〈0.05,两种视力表无论是裸眼视力还是矫正视力在统计学上均有显著性差异。结论：两种视力表的视力检查结果有所差异,裸眼视力相差19.953′视角,矫正视力相差15.849′视角,且低视力专用视力表的均值均小于标准对数视力表。

简介：目的探讨彩色及能量多普勒血流显像在诊断视网膜脱离中的应用价值。方法对48例患者共50只患眼的高频及彩色、能量多普勒血流显像的声像图进行回顾性分析。结果超声诊断视网膜脱离患眼47只,完全性网脱11眼,部分性网脱36眼。47只患眼都可见玻璃体内异常光带,其中43眼光带内可显示彩色血流信号,占91％。漏诊3例,诊断符合率94％。结论彩色多普勒及能量多普勒血流显像对视网膜脱离具有独特的诊断应用价值,为临床提供可靠的诊断依据。

简介：目的探讨桥小脑角疾病的相位平衡快速梯度回波(Balance-FastFieldEcho,B-FFE)序列MRI影像学特点,评价B-FFE序列对桥小脑角疾病的诊断价值.方法应用B-FFE序列对136例桥小脑角病变者(三叉神经痛131例、半面痉挛5例)进行MRI检查,观察桥小脑角神经、血管、肿瘤显像情况,并与手术中资料进行比较.结果131例三叉神经痛患者中,117例为原发性三叉神经痛,MRI显示有血管压迫者102例,术中证实有血管压迫者95例,行显微血管减压+神经梳理术;14例为继发性三叉神经痛,均为桥小脑角占位性病变,术后病理证实7例为胆脂瘤,2例为听神经瘤,5例为脑膜瘤;5例半面痉挛患者MRI显示有血管压迫,术中证实有血管压迫,并予以血管减压.结论B-FFE序列MRI成像能清楚显示桥小脑角区三叉神经、面神经与血管的关系及是否有占位性病变,对诊断、术前评估和指导治疗有重要意义.

简介：回顾分析经病理检查证实的真菌性鼻窦炎32例，探讨其螺旋CT征象。

简介：AIM:Toinvestigatethepossiblerelationshipbetweentheinfluencingfactorsoccurringbeforeandduringbirthinfull-terminfantsandtheoutcomeofretinopathy.·METHODS:Totally816full-terminfantsadmittedintheneonateintensiveunitofBoaiHospitalofZhongshanbetween1May,2008and30June,2011wereincludedinthestudy.Fundusexaminationwasperformedandevaluatedindividuallyonthemattheageof48hoursafterdelivery,2weeksand1month.Somepossibleriskfactorshappeningprenatallyorduringdeliverysuchaspregnantrelatedhypertension,placentaprevia,placentalabruptionetc,aswellassomeneonatalriskfactorssuchasneonatalasphyxia,hypoxic-ischemicencephalopathy(HIE),lowbirthweightetc,wererecordedandevacuated.Thentheeffectoftheriskfactorsoffull-terminfantsonretinopathywasstudied.·RESULTS:Theincidenceofretinalhemorrhageoffull-terminfantswithprenatalpregnantrelatedhypertension(PRH)ofthemother(43.6%)wassignificantlyhigherthanthatoffull-terminfantswithout(8.0%).(P<0.001).Theincidenceofretinalhemorrhageoffull-terminfantswithneonatalasphyxiaand/orhypoxic-ischemicencephalopathy(HIE)(29.3%)wassignificantlyhigherthanthatofthosewithout(15.7%),butcorrelationwasnotfoundbetweentheseverityofretinahemorrhageandthedegreeofhypoxicdisease.Apalecolorofopticdiscwasassociatedwithalowbirthweightoffull-terminfant.Full-terminfantswithbirthweighlessthan2500ghadasignificanthigherincidenceofretinopathythanthosewithbirthweightequalormorethan2500g(P<0.001).·CONCLUSION:Themaininfluencingfactorswhichleadtoretinopathyofhighriskfull-terminfantsareprenatalfactorssuchasPRH,andsomeneonatalriskfactorssuchasasphyxia,hypoxic-ischemicencephalopathy,andlowbirthweight.

简介：ToficIOL，又称散光人工晶状体，是将散光矫正与人工晶状体的球镜度数相结合的一种新型屈光性人工晶状体。ToficIOL可使白内障合并散光的患者获得更好的术后视觉效果。本文回顾了ToficIOL的发展史，全面讨论了ToficIOL植入的术前检查、手术方法和术后临床效果观察，分析探讨了ToficIOL目前存在的问题，并对其未来发展进行展望。

简介：·Descemet’smembranedetachment(DMD)canbeapotentiallyseriouscomplicationofintraocularsurgeryoroculartrauma.Thecauseisnotveryclear.WearetryingtoremindanawarenessofthespectrumofDMDresultingfromtrabeculectomybypresentingacaseofextensiveDMDaftertrabeculectomywhichwassuccessfullyrepaired.

简介：眼科疾患的影像学检查过去主要依靠头颅、眼眶平片、CT、超声、眼底萤光素血管造影、颈内、颈外动脉造影以及眼静脉造影等。九十年代末,磁共振成像(magneticresonanceimagingMRI)的问世使检查眼部疾病的方法发生了巨大的变化。MRI作为一种新的、无创伤、无痛苦、无辐

简介：Oculardrugtransportbarriersposeachallengefordrugdeliverycomprisingtheocularsurfaceepithelium,thetearfilmandinternalbarriersoftheblood-aqueousandblood-retinabarriers.Oculardrugdeliveryefficiencydependsonthebarriersandtheclearancefromthechoroidal,conjunctivalvesselsandlymphatic.Traditionaldrugadministrationreducestheclinicalefficacyespeciallyforpoorwatersolublemoleculesandfortheposteriorsegmentoftheeye.Nanoparticles(NPs)havebeendesignedtoovercomethebarriers,increasethedrugpenetrationatthetargetsiteandprolongthedruglevelsbyfewinternalsofdrugadministrationsinlowerdoseswithoutanytoxicitycomparedtotheconventionaleyedrops.Withtheaidofhighspecificityandmultifunctionality,DNANPscanberesultedinhighertransfectionefficiencyforgenetherapy.NPscouldtargetatcornea,retinaandchoroidbysurficialapplicationsandintravitrealinjection.ThisreviewisconcernedwithrecentfindingsandapplicationsofNPsdrugdeliverysystemsforthetreatmentofdifferenteyediseases.

简介：AIM:Toevaluatetheeffectofbrinzolamide-timololfixedcombinationonintraocularpressure(IOP)aftercataractsurgery.METHODS:Thestudyincluded92eyesof87patientswhounderwentcataractsurgeryandintraocularlensimplantation.Patientsscheduledforphacoemulsificationwereassignedto1of2groups.Thetreatmentgroupreceived1dropofbrinzolamide-timololfixedcombinationimmediatelyaftersurgery,andthecontrolgroupreceivednotreatment.TheIOPwasmeasuredpreoperativelyandat2hand24hpostoperatively.RESULTS:ThemeanIOPchangewaslowerinthetreatmentgroupthaninthecontrolgroupat2hpostoperatively.ThedifferencebetweenthemeanIOPvaluesofthetwogroupsat2hpostoperativelywasfoundtobestatisticallysignificant.Twenty-fourhoursafterthesurgery,themeanIOPchangewasstillhigherinthecontrolgroupwhencomparedtothetreatmentgroup.CONCLUSION:ThefixedcombinationbrinzolamidetimololcaneffectivelyreduceIOPaftercataractsurgery.

简介：<正>DearSir,IamProf.BeuyJoobfromSanitation1MedicalAcademicCenter,Bangkok,Thailand.Iwritetodiscusstherecentpublicationonproteomicanalysisindiabeticretinopathy(DR).Liuetal[1]concludedthattheirapproachbytwodimensionalfluorescencedifferencegelelectrophoresis(2D-DIGE)combinedwithmatrix-assistedlaser

简介：神经眼科学是介于神经科学和眼科学之间的一门交叉学科，掌握相关磁共振知识至关重要。磁共振血管造影、磁共振静脉造影以及脑功能磁共振成像是近年来发展迅速的核磁新技术，在神经眼科方面的应用上有其独特优势。

简介：·Thetherapeuticeffectofselenium(Se)hasalreadybeenproveninthyroiddiseaseandthyroidassociatedophthalmopathy(TAO).InspiteofclearscientificproofofitsbenefitsinTAO,thereappearstobenoclearagreementamongthecliniciansregardingitsoptimumdose,durationofthetreatment,efficacyandsafetytodate.Inthisreview,theauthorsummarisesthefindingsof135Englishlanguagearticlespublishedonthissubjectoverthepastfourdecadesfrom1973to2013.TheregulationandmetabolismofthyroidhormonesrequireasteadysupplyofSeandrecentstudieshaverevealedseveralpossiblemechanismsbywhichSeimprovestheseverityofthyroiddiseaseandTAO.Thesemechanismsinclude1)inhibitoryeffectofHLA-DRmoleculeexpressiononthyrocytes;2)profoundreductionsofthyroidstimulatinghormone(TSH)receptorantibodies(TSHR-Ab)andTPOantibodies(TPO-Ab);3)preventionofdysregulationofcell-mediatedimmunityandBcellfunction;4)neutralisingreactiveoxygenspecies(ROS)andinhibitionofredoxcontrolprocessesrequiredfortheactivation,differentiationandactionoflymphocytes,macrophages,neutrophils,naturalkillercellsinvolvedinbothacuteandchronicorbitalinflammationinTAO;5)inhibitionofexpressionofproinflammatorycytokinesand6)inhibitionofprostaglandinandleukotrienesynthesis.AnincreasedoxidativestresshasbeenobservedinbothacuteandchronicphasesofthyroiddiseasewithraisedtissueconcentrationsofROS.ThebenefitsofSesupplementationinindividualswithTAOappeartobeproportionatetothedegreeofsystemicactivityofthethyroiddisease.ThemaximalbenefitofSesupplementationisthereforeseeninthesubjectswhoarehyperthyroid.RestorationofeuthyroidismisoneofthemaingoalsinthemanagementofTAOandwhenanti-thyroiddrugsarecombinedwithSe,thepatientswithGraves’disease(GD)andautoimmunethyroiditis(AIT)achievedeuthyroidismfasterthanthosetreatedwithanti-thyroiddrugsalone.SestatusofnormaladulthumanscanvarywidelyandSe

简介：目的：探讨儿童瞬目症BUT情况，为临床治疗提供依据。方法：215例患者均排除全身疾患，检查角膜、结膜、屈光不正等，着重检查BUT，详细了解患者病史，不良生活习惯等，治疗上停用含有防腐剂及激素类滴眼液，避免及纠正不良卫生及生活习惯，心理治疗，合理用眼，矫正屈光不正，给予不含防腐剂的滴眼液点眼，如3g／L艾丽滴眼液3次／d点眼，需用抗生素的给予可乐必妥滴眼液3～4次／d点眼，酌情给予抗病毒及维生素类药物。结果：215例患者BUT小于10s者197例（91．6％）326眼，其中5S以下123例224眼。本组215例病例中经过7～28d治疗，173例（80．5％）治愈，37例（17．2％）好转，5例（2．3％）无效，均未患眼部疾病，且不配合治疗，仍每天看电视或玩电脑游戏2h以上。经治疗BUT正常者192例（89．3％），好转19例（8．8％）无效者4例（1．9％）。随访1～6mo，复发31例，均为长期看电视、玩电脑、习惯揉眼者，BUT检查再次异常者，重复治疗后治愈或好转。结论：泪膜的保持并发挥其生理功能与瞬目动作休息相关，我们认为泪膜稳定性差是瞬目症的另一重要因素，BUT检查在诊治儿童瞬目症中起着关键的作用，它可以正确指导医生合理用药，使患者早日康复，而且简单易行，无痛苦，儿童易接受。我们建议BUT可作为儿童瞬目症的常规检查。

简介：目的研究传入神经物质-谷氨酸在小鼠耳蜗Corti器中的表达。方法应用免疫组化技术简洁而又成功地在光镜下对小鼠游离耳蜗Corti器中谷氨酸进行定位。结果显示小鼠耳蜗内,外毛细胞染色阳性,染色颗粒细而均匀。克服了谷氨酸神经递质用传统常规前包埋染色技术电镜下不能显示的缺点。结论证实谷氨酸是毛细胞的传入性神经递质。

简介：·AIM:Toinvestigatetheantifibroticeffectoffreeze-driedbilayeredfibrin-bindingamnioticmembraneontrabeculectomyinarabbitmodel.·METHODS:Twenty-fourJapanesewhiterabbitswererandomizedintothreegroups:theexperimentalgroup(oculartrabeculectomyincombinationwithfreeze-driedbilayeredfibrin-bindingamnioticmembranetransplantation),thecontrolgroup(oculartrabeculectomyincombinationwithnaturalbilayeredfibrin-bindingamnioticmembrane)andtheblankgroup(singletrabeculectomy).Clinicalobservation,hematoxylin-eosinstaining,Massionstaining,real-timePCRandimmunohistochemistryforα-SMAwereperformedondays7,14,21and30followingsurgery.·RESULTS:Statisticaldifferenceswerenotedinsurvivalanalysisandintraocularpressure(IOP)amonggroupsondays7,14,21and30followingsurgery.Histology,immunoh-istochemistryandreal-timePCRfurtherdemonstratedthattrabeculectomyincombinationwithfreeze-driedbilayeredfibrin-bindingamnioticmembraneresultedingoodwoundhealingandnoscarformation.·CONCLUSION:Self-madefreeze-driedbilayeredfibrin-bindingamnioticmembranemayinhibittheformationofscarringinglaucomaaftertrabeculectomy.·

简介：视网膜血管异常是很多常见致盲疾病的根本原因。包括：早产儿视网膜病变（中等收入国家儿童盲的重要原因）糖尿病视网膜病变（工业国家劳动力人群的最常见致盲原因）年龄相关性黄斑变性（世界范围内第三位的致盲原因）这些疾病的发生很大一部分原因是一种叫作血管内皮生长因子（VEGF）的蛋白产生过量。这种蛋白在20世纪80年代被发现,它在血管的发生、生长过程中起重要作用。