简介:AIM:Toestimatetheprevalenceandriskfactorsforvitreousfloatersinthegeneralpopulation.·METHODS:Anelectronicsurveywasadministeredthroughasmartphoneappaskingvariousdemographicandhealthquestions,includingwhetherusersexperiencefloatersintheirfieldofvision.Multivariatelogisticregressionanalysiswasusedtodetermineriskfactors.·RESULTS:Atotalof603individualscompletedthesurvey,with76%reportingthattheyseefloaters,and33%reportingthatfloaterscausednoticeableimpairmentinvision.Myopeswere3.5timesmorelikely(P=0.0004),andhyperopes4.4timesmorelikely(P=0.0069)toreportmoderatetoseverefloaterscomparedtothosewithnormalvision.Floaterprevalencewasnotsignificantlyaffectedbyrespondentage,race,gender,andeyecolor.·CONCLUSION:Vitreousfloaterswerefoundtobeaverycommonphenomenoninthisnon-clinicalgeneralpopulationsample,andmorelikelytobeimpairinginmyopesandhyperopes.
简介:AIM:Toinvestigatetheefficacyofnon-buckledvitrectomywithclassicalendotamponadeagentsinthetreatmentofprimaryretinaldetachment(RD)complicatedbyinferiorbreaksandproliferativevitreoretinophathy(PVR).METHODS:Aretrospective,consecutiveandcaseseriesstudyof40patientswithinferiorbreakRDandPVR≥C1wasconducted.Allpatientsunderwentastandard3-port20-gaugeparsplanavitrectomy(PPV)withgasorsiliconeoiltamponadewithoutsupplementaryscleralbuckling.Thevitreousandallproliferativemembranewerecompletelyremoved,andretinectomywasperformedwhennecessary.Themeanfollow-upwas12.5months.Theprimaryandfinalanatomicsuccessrate,visualacuityandcomplicationswererecordedandanalyzed.RESULTS:Primaryanatomicsuccessratewasachievedin35of40eyes(87.5%)andthefinalanatomicsuccessratewas100%.ThemostcommoncauseofredetachmentwasrecurrentPVR.Thebest-correctedvisualacuity(BCVA)atfinalfollow-upwasimprovedin34eyes(85%),remainedstablein1eye(2.5%),andworsenedin5eyes(12.5%).Themeanvisualacuityatfinalfollow-upwasimprovedsignificantly(P=0.000).CONCLUSION:ThisretrospectivestudyprovidesevidencethatvitrectomywithoutscleralbucklingseemedtobeaneffectivetreatmentforinferiorbreakRDwithPVR.Withcompleteremovalofvitreousandproliferativemembranesandtimingofretinectomy,theinferiorbreakswhichcomplicatedwithPVRcouldbeclosedsuccessfullywithoutadditionalscleralbuckling.
简介:AIM:Todeterminethehistopathologicalchangesofrifampicinappliedintravitreallyonretinalganglioncellsbymeansofstereologicalandhistopathologicalmethods.METHODS:Forthisstudytwenty-fourNewZealandadultrabbitsweredividedintofourgroups(n=6foreachgroup).50μg/0.1mL(group1),100μg/0.1mL(group2),150μg/0.1mL(group3)and200μg/0.1mL(group4),rifampicinwereinjectedintothevitreousoftherighteyesofanimals,theirlefteyeswereusedascontrol(group5).Afterthe28thdayofapplication,animalswereanesthetisedwithxylazine(8mg/kg,IM)andthentheireyeswereenucleatedimmediately.Patternsweretakenawayandeyeswerepreparedforbothstereologicalandelectromicroscopicobservation.RESULTS:Dependingonthehighdoseofrifampicin,somehistopathologicalchangessuchascytoplasmicdilatationanddamagedmembranewereobservedontheelectromicroscopiclevel.Usingquantitativeexamination,whichwasdoneatthelightmicroscopiclevel,itwasshownthatthenumberofneuronsdecreasedlinearlyasrifampicindoseincreasedwhencomparedwiththecontrolgroup.CONCLUSION:Basedonthesefindings,low-doserifampicin(50μg/0.1mL)maybeusefulfortreatmentoftheoculardiseases.
简介:目的:分析玻璃体腔注射曲安奈德术后继发性青光眼的发生率和危险因素。方法:对连续收治的256例有玻璃体腔注射曲安奈德适应证的各类眼底病患者实施单次玻璃腔注射4mg/0.1mL曲安奈德手术,观察其术后眼压变化情况。主要适应证包括湿性年龄相关性黄斑变性,其它原因如糖尿病性视网膜病变、视网膜中央静脉阻塞、视网膜分支静脉阻塞,视网膜静脉周围炎等引起的黄斑水肿性疾病。结果:256例256眼经至少3mo的追踪观察随访中,56眼发生继发性青光眼,发病率为21.9%。结论:继发性青光眼与年龄、性别、血压、糖尿病、玻璃体腔注药术的不同适应证、术前是否行白内障手术、是否行光动力治疗、是否行玻璃体切除手术等因素没有相关性。注药前青光眼病史的存在和基础眼压高于19mmHg等情况为术后继发性青光眼的显著危险因素。
简介:AIM:Todescribethedesignandpreliminaryresultsofthehospitalbasedepidemiologicalstudyfordiabeticretinopathy(HBESDR),anongoingepidemiologicalstudytoestimatetheprevalenceofdiabeticretinopathy(DR)andtoelucidatetheclinical,anthropometric,biochemicalandanyotherriskfactorsassociatedwithdiabeticretinopathy.METHODS:Totally2000diabeteswillberecruitedfromtheDiabeteseyeclinicintheFirstAffiliatedHospitalofChinaMedicalUniversity.AllsubjectsunderwentbloodsugarestimationandOralGlucoseToleranceTesttodiagnosediabetes.Alldiabeteswouldundergocompletequestionnaire,acomprehensiveeyeexamination.Bloodandurinewouldbecollectedforbiochemicalinvestigations.AllfundusphotographsforanyDRwillbegraded.Participantswhoneedtreatmentwillbesenttotheophthalmicclinicandfollow-upintervalprogramforallsubjectswillbesuggested.Acomputerizeddatabaseiscreatedfortherecords.RESULTS:Todate,1174diabeteshavebeenrecruited,therewere350(29.81%)DRinalldiabetes,mostofthemwerewithmildnon-proliferativediabeticretinopathy(NPDR)(139,39.71%);71(20.29%)moderateNPDR,66(18.86%)severeNPDR,74(21.14%)proliferativediabeticretinopathy(PDR).Females,longerdurationofdiabetes,familyhistoryofdiabetesandhypertensionhadastatisticallysignificantincreaseinriskofanyDR.CONCLUSION:ThestudyisexpectedtoprovideanestimateoftheoverallprevalenceofDRandtheprevalencewithdifferentdurationofdiabetesandalsoabetterunderstandingoftheriskfactorsassociatedwithDR.
简介:目的探讨高分辨率颞骨CT密度在诊断耳硬化中的作用。方法分析手术确诊的耳硬化患者34例(34耳,病例组)和同期确诊的周围性面瘫患者33例(对侧正常耳33耳,对照组)的颞骨CT扫描和纯音听阈测试结果。在0.75mm层厚颞骨CT轴位层面的耳囊周围,手动设置7个兴趣区,测量平均cT值。根据CT表现将耳硬化病例分为2个亚组:A组,CT显示无病理变化;B组,耳蜗区骨密度降低。比较各兴趣区病例组与对照组平均CT值的差异,分析病例组CT表现与纯音测听结果的关系。结果卵圆窗后缘和卵圆窗前缘这两个兴趣区,病例组平均CT值明显低于对照组(卵圆窗后缘t=-2.030,P=0.046;卵圆窗前缘Z=-4.979,P〈0.01)。A组30例,包括传导性聋9例(30%),混合性聋21例(70%);B组4例,包括传导性聋1例(25%),混合性聋3例(75%)。结论耳硬化患者卵圆窗周围骨质CT密度可能发生改变。
简介:目的:通过多焦视网膜电图(multifocalelectroretinography,mf-ERG)在中心性浆液性脉络膜视网膜病变(centralserouschorioretinopathy,CSC)治疗前后的观察,提高CSC诊断的准确性,并指导临床诊疗,评估预后。方法:设置有比较性的CSC观察组和双眼正常的对照组。观察组有31例CSC患者都是单眼发病,这些患者每只眼(包括患眼与对侧眼)在发病期与恢复期都经过眼科的系统检查,包括最佳矫正视力、眼底荧光血管造影、OCT和mf-ERG,并记录这些检查的数据。对照组有30例,与观察组年龄范围相同,同样做上述检查并记录数据。对两组数据进行对比分析。结果:在CSC发病期,mf-ERG显示患眼平均视网膜振幅密度在1环为60.54±18.20nV/degree2,比对照组(110.94±31.20nV/degree2)低45.43%(P〈0.01),在2环为38.12±10.81nV/degree2,比对照组(60.91±11.43nV/degree2)低37.42%(P〈0.05)。在恢复期,mf-ERG显示患眼平均视网膜振幅密度在1环为93.71±14.13nV/degree2,比对照组(110.94±31.20nV/degree2)低15.53%(P〈0.05);在2环为51.16±10.34nV/degree2,比对照组(60.91±11.43nV/degree2)低16.01%(P〈0.05)。另外,我们还发现,观察组31例患者中有8例对侧眼也显示出异常,平均视网膜振幅密度在1环为62.41nV/degree2,其余23例患者对侧眼未发现异常。结论:多焦视网膜电图有助于中心性浆液性脉络膜视网膜病变患者的临床治疗与随访观察,对中心性浆液性脉络膜视网膜病变患者的诊断、病情评估及预后都起着重要的作用。
简介:AIM:ToinvestigatetheefficacyofFerrararings(FR)implantationinthetreatmentofkeratoconus.METHODS:Itwasaretrospectivecaseseriesdescriptivestudy.Thesamplewascomprisedof50patients79eyesdiagnosedwithprogressivekeratoconus.Thisincluded24(48%)malesand26(52%)femalesbetweentheageof13and44years.AllparticipantsunderwentsurgicalimplantationofFRintheperiodbetweenJanuary2009andSeptember2010atJordanUniversityHospital.Thoroughophthalmologicexaminationswereappliedtomeasurevitalvariablesforeachpathologicalconditionbeforeandaftersurgery.RESULTS:Findingsindicatedanoverallsignificantpostoperativeimprovementinbothuncorrectedvisualacuity(UCVA)andbestspectaclecorrectedvisualacuity(BSCVA)throughoutfollowupvisits.Moreover,resultsillustratedasignificantdecreaseinsphericalequivalent(SE)andkeratometricreadings(lower,higherandtheaverage).CONCLUSION:Surgicalinterventionstrategiesarebeingfrequentlydevelopedtomeettheneedsofpatientswithkeratoconus.TheimplantationofFerrararingshasproventobeasafeandfeasiblealternativeprocedureforthetreatmentofmild-moderatekeratoconusespeciallyforpatientswithcontactlensesintolerance.Wehavefoundthatthisprocedurehasimprovedvisualoutcomesinalleyesstudied.Nevertheless,furtherresearchisneededtoinvestigatelongtermoutcomes.
简介:AIM:Toevaluatetheefficacy,safetyandstabilityofposteriorchamberphakicintraocularlensimplantationforthecorrectionofhighmyopia.METHODS:Retrospectivecasereviewof82eyes(43patients)undergoingimplantableColiamerlens(ICL)placementbyasinglesurgeon(Xiao-WeiGao)tocorrectpreoperativemeansphericalequivalentsbetween-9.00diopter(D)and-23.00D.Mainoutcomemeasuresincludeduncorrectedvisualacuity(UCVA),refraction,bestspectacle-correctedvisualacuity(BSCVA),endothelialcelldensity(ECD),intraocularpressure(IOP),lenstransparency,postoperativeuveitis.Visanteanteriorsegmentopticalcoherencetomography(AS-OCT)wasusedtomeasureanteriorchamberdepth(ACD)andthepositionofICL.RESULTS:Meanfollow-upwas6.54±3.26months(range3-12months).Predictabilityofthemanifestsphericalequivalent(SE)refractiontowithin±1.OODwasachievedin88%ofeyesand±0.50Din72.5%ofeyes.ThemeanpostoperativemanifestSErefractionwas-1.85±0.72D,with96.34%ofeyesmaintainingorgaining≥1line(s)ofBSCVA.Themean3-monthpostoperativeECDdecreasedbuthadnostatisticallydifferencecomparedwiththepreoperativeECD.Ofthe7eyes(8.54%)withamildtransientincreaseinintraocularpressure(upto30mmHg),nonerequiredasecondsurgicalprocedureorprolongedtopicalmedication.Therewasnolossoflenstransparency.Pigmentedprecipitateswereobservedin5eyes(6.09%).ThemeanpreoperativeACDmeasuredwithAS-OCTwas3.28±0.14mm,threemonthsaftersurgery,themeanACDwas2.45±0.22mm.Anteriorchamberdepthshowedastatisticallysignificantreduction.Oneeye(1.22%)hadICLspontaneousrotation,81eyes(98.78%)ofthelensremainedcorrectlycentered.CONCLUSION:TheimplantationofICLisaneffectivesurgicaloptionforthemanagementofhighmyopia.Butitslongtimeeffectandsafetystillneedmoretimetoprove.
简介:目的通过检测Fas和FasL在鼻息肉中的表达,研究细胞凋亡和Fas/FasL系统在鼻息肉发病机制中的作用.方法用免疫组化方法检测Fas和FasL在35例鼻息肉和17例正常下鼻甲组织中的表达.对Fas和FasL阳性细胞的类型、分布特点进行分析.结果1.Fas和FasL在鼻息肉组织中的表达均较正常下鼻甲组织明显增强,差异有显著性.2.Fas在上皮细胞和间质细胞中都有阳性表达,主要表达于息肉表面的上皮细胞和间质内的炎性细胞中.结论1.Fas/FasL系统介导的凋亡在鼻息肉的发病机制中有重要作用,可能是鼻息肉长期保持良性增生的重要因素.2.FasL在鼻息肉上皮细胞中的高表达与上皮细胞的过度增生及Fas/FasL系统的免疫监视作用有关.
简介:目的:观察和分析角膜塑形镜治疗后角膜形态的变化,评估角膜塑形镜治疗后光学区偏离中心对控制近视的影响。方法:回顾性临床研究。对134例134眼近视患儿配戴角膜塑形镜矫治近视,平均年龄10.66±1.79岁,均取右眼数据进行研究。分别在戴镜前及戴镜后3、6、12、18、24mo检查视力、眼轴和角膜地形图。使用SPSS19.0进行统计学分析。结果:戴镜后3、6、12、18、24mo的光学区偏瞳孔中心距离分别为0.84±0.45、0.77±0.40、0.79±0.41、0.78±0.41、0.79±0.42mm,差异无统计学意义(F=1.187,P=0.319)。戴镜24mo后平均光学区偏中心距离为0.79±0.35mm,眼轴增长均值为0.32±0.30mm。戴镜24mo后平均偏中心距离轻度(<0.5mm)、中度(0.5~1.0mm)、重度(>1.0mm)的眼轴增长分别为0.45±0.34、0.32±0.28、0.23±0.29mm,差异有统计学意义(F=3.825,P=0.024)。戴镜后的平均偏中心距离和眼轴增长经线性回归分析,其线性关系有统计学意义(F=7.246,P=0.008),线性回归方程Y=0.478-0.194X。戴镜24mo后,18眼有重影,其偏中心距离均值1.18±0.36mm;116眼无重影,其偏中心距离均值0.73±0.31mm,偏中心距离比较差异有统计学意义(t=5.59,P<0.01)。结论:光学区偏中心距离在角膜塑形镜治疗3mo后趋于稳定,且对控制近视的效果和视觉质量有影响。
简介:目的:观察美尔瑞片(中草药灯盏细辛)对眼压控制后的青光眼是否具有视神经保护作用.方法:对99例(113眼)眼压已控制的原发性开角型青光眼及闭角型青光眼进行多中心、前瞻性、随机、双盲对照临床研究,观察口服美尔瑞片6mo后对视野的疗效,本研究采用VFDS视野缺损计分法,从0(无缺损)至20(所有检测点均不可测出).结果:美尔瑞治疗组55例(66眼),安慰剂对照组44例(47眼),治疗前及治疗后2,4,6mo2组的眼压均<15mmHg,2组间同一时期眼压无显著性差异(P>0.05).服美尔瑞2,4,6mo后VFDS净减值分别为0.44±1.60,1.27±2.16及1.42±2.37,呈现随治疗时间延长,视野缺损逐渐好转趋势.对照组2,4,6mo后VFDS净减计分值分别为-0.02±1.5,0.68±1.73和0.40±1.57.VFDS净减值两组间同一时期比较有显著性差异(P<0.05),治疗6mo后有高度显著性差异(P<0.01).结论:灯盏细辛可用于治疗青光眼性视神经病变,有助于扩大/保持视野.