简介:目的:探讨无囊膜支撑的无晶状体眼植入Artisan人工晶状体的有效性和安全性。方法:前瞻性地分析24例24眼无囊膜支撑的无晶状体眼植入虹膜固定Artisan人工晶状体的手术后结果。纳入病例包括外伤性晶状体脱位、视网膜脱离或球内异物行晶状体玻璃体切除术后及晶状体摘出术后囊膜缺失。手术前后进行完整的眼部检查,包括裸眼视力、眼压、角膜内皮计数、瞳孔形态、人工晶状体固定情况、虹膜玻璃体视网膜情况,记录手术中和手术后出现的并发症。结果:患者随访12~24mo。所有手术眼视力均有提高,手术前裸眼视力为手动~0.2(logMAR1.91±0.89),手术后末次随访裸眼视力为0.2~1.0(logMAR0.46±0.59)。手术后1,3,12mo术眼平均等效球镜度数分别为-1.26,-0.43,-0.35D,±2.0D以内者术后3mo和12mo分别占66.7%和83.3%,±1.0D以内者分别占41.7%和50%。手术前及术后3,12mo眼压分别为16.95±7.85,12.38±4.68,15.96±5.25mmHg。手术前及手术后3,12mo平均角膜内皮计数分别为2493.8,2270.3,2263.7个/mm2,手术后1~3mo,4~12mo内皮细胞丢失率分别为8.96%,0.27%,手术后12mo内皮细胞总丢失率为9.23%。手术后无持续性葡萄膜炎,虹膜无明显手术损伤和萎缩,瞳孔形态无变化,Artisan人工晶状体正位牢固固定,对玻璃体视网膜无影响。玻璃体切除眼手术中使用前房灌注可避免眼球塌陷。结论:无囊膜支撑的无晶状体眼植入虹膜固定Artisan人工晶状体是有效和安全的方法,但仍需要长期的随访观察以进一步对Artisan人工晶状体植入术作出评价。
简介:目的:探讨超声乳化术治疗玻璃体切割术后并发性白内障的手术特点、安全性及临床疗效。方法:对39例39眼玻璃体切割术后并发性白内障的患者行超声乳化术,其中对有硅油充填的23眼联合硅油取出术,观察手术前后视力及术中、术后并发症。术后随访3~24(平均10)mo。结果:所有病例术中无严重并发症发生。术后最佳矫正视力37眼(95%)提高,2眼(5%)无改变,无视力下降者。1眼硅油取出后2wk视网膜脱离复发,1眼术后1mo玻璃体出血,均行玻璃体切割联合硅油填充术而治愈。无脉络膜出血、低眼压等并发症。结论:玻璃体切割术后并发性白内障眼内情况复杂,手术难度大,超声乳化术是一种安全有效的手术方法。
简介:目的:探讨手法小切口联合负度数人工晶状体植入术治疗白内障合并超高度近视眼的临床疗效。方法:对因白内障合并超高度近视眼行小切口联合负度数人工晶状体植入术的75例98眼患者进行回顾性研究,记录术前眼轴长度和术后视力、屈光度数及其与预期屈光度数的偏差值(屈光度数偏差值),观察手术并发症和术后眼部情况。术后随访6~12mo。结果:术前平均眼轴长度为32.05±1.78mm。术后最佳矫正视力≥0.2者66眼(67.3%);≥0.5者43眼(43.9%),术后屈光度数偏差值〈±1.00D者48眼(49.0%);〈±2.00D者78眼(79.6%)。术中后囊膜破裂3眼。术中出现后弹力层部分脱离1例。术后角膜不同程度水肿21眼。术后6mo有13眼出现后囊混浊,经Nd:YAG激光切开后视力恢复。未见发现视网膜脱离、继发性青光眼、黄斑囊样水肿、人工晶状体移位等并发症。术后2眼出现双眼干扰症状,经过3mo后行另一眼人工晶状体植入术,术后症状消除。结论:手法小切口白内障摘除负度数人工晶状体植入术是治疗白内障合并超高度近视眼安全、有效的方法。
简介:目的:比较非球面和球面人工晶状体植入术后波前像差、裸眼远视力、最佳矫正远视力、对比度视力的差异。方法:年龄相关性白内障患者46例50眼,将其随机分成两组,球面人工晶状体组(A组)23例24眼术中植入ACR6DSE球面人工晶状体;非球面人工晶状体组(B组)23例26眼术中植入具有负球面像差Acri.Smart36A非球面人工晶状体。术后3mo,观察两组患者的裸眼视力、最佳矫正视力、暗背景(25cd/m2)和高亮背景(255cd/m2)下的对比度视力、瞳孔直径(6mm)时的球面像差、彗差和高阶像差的均方根是否存在差异。结果:两组患者术后裸眼远视力、最佳矫正远视力比较差异无统计学意义,亮背景下各对比度视力以及暗背景下100%,25%对比度视力两组比较差异无统计学意义,暗背景下5%,10%低对比度时B组视力好于A组。瞳孔直径6mm时,B组高阶像差的均方根(RMS)、球差、彗差和A组比较差异均有统计学意义,B组RMS、球差、彗差低于A组。结论:Acri.Smart36A非球面人工晶状体植入术后与ACR6DSE球面人工晶状体比较可以明显的减少患者的高阶像差,改善患者的术后暗环境下的低对比度视力。
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:ToidentifythegeneticdefectinaChinesefamilywithbilateralprogressivechildhoodposteriorcataract.METHODS:Atwo-generationfamilywasrecruitedinthisstudy.Familyhistoryandclinicaldatawererecorded.AllreportedcandidategenesassociatedwithcongenitalposteriorcataractwerescreenedbydirectDNAsequencing.·RESULTS:Allaffectedindividualspresentedposterioropacitiesinthelens.Directsequencingofthecandidategenesshowedaheterozygousc.2668C>TvariationinEPHA2gene,whichresultedinthereplacementofargininebycysteineatcodon890(p.R890C).Thismutationwasfoundintwoaffectedindividuals,butwasnotobservedin200normalcontrols.·CONCLUSION:Wereportanovelmutation(p.R890C)intheEPHA2receptortyrosinekinasegene.ThefindingexpandsthemutationspectrumofEPHA2inassociationwithposteriorcataract.
简介:AIM:ToIntroduceanewspecializedvisualacuitychartforamblyopicchildrenaged3-5yearsoldanditsclinicalapplications.METHODS:ThenewvisualacuitychartandnotationsweredesignedbasedonWeber-Fechnerlaw.Theoptotypeswereredagainstawhitebackgroundandwerespeciallyshapedfourbasicgeometricsymbols:circle,square,triangle,andcross.Aregulargeometricprogressionoftheoptotypesizesanddistributionwasemployedtoarrangein14lines.Theprogressionrateoftheoptotypesizebetweentwolineswas1.2589andthetestingdistancewas3m.VisualacuityscorecouldberecordedaslogMARnotationordecimalnotation.Agestratifieddiagnosticcriteriaforamblyopiaestablishedbyconsensusstatementondiagnosisofamblyopia(2011)amongmembersoftheStrabismusandPediatricOphthalmologyGroup,OphthalmologySociety,ChineseMedicalAssociation(SPOGOSCMA)wereillustratedinthenewvisualacuitychart.RESULTS:Whenassessingvisualacuityinchildrenaged3-5yearsold,thisnewvisualacuitychartthatconsistsoffoursymmetricalshapes(triangle,square,cross,andcircle)overcameaninabilitytorecognizethelettersofthealphabetanddifficultiesindesignatingthedirectionofblackabstractsymbolssuchasthetumbling’E’orLandolt’C’,whichthesubjectswerepronetoloseinterestin.Thevisualacuityscoremayberecordedindifferentnotations:decimalacuityandlogMAR.Thesetwonotationscanbeeasilyconvertedeachotherintheneweyechart.Themeasurementsofthisnewchartnotonlyshowedasignificantcorrelationandagoodconsistencywiththeinternationalstandardlogarithmicvisualacuitychart(r=0.932,P<0.01),butalsoindicatedahightest-retestreliability(89%ofretestscoreswerewithin0.1logMARunitsoftheinitialtestscore).CONCLUSION:Theresultsofthisstudysupportthevalidityandreliabilityofdistancevisualacuitymeasurementsusingtheneweyechartinchildrenaged3to5yearsoverawiderangeofvisualacuities,andtheneweyechartisgreatforearl
简介:AIM:Toaddressissuesininteroperabilitybetweendifferentfundusimagesystems,weproposedawebeyepicturearchivingandcommunicationsystem(PACS)frameworkinconformancewithdigitalimagingandcommunicationinmedicine(DICOM)andhealthlevel7(HL7)protocoltorealizefundusimagesandreportssharingandcommunicationthroughinternet.METHODS:Firstly,atelemedicine-basedeyecareworkflowwasestablishedbasedonintegratingthehealthcareenterprise(IHE)EyeCaretechnicalframework.Then,abrowser/serverarchitectureeye-PACSsystemwasestablishedinconformancewiththewebaccesstoDICOMpersistentobject(WADO)protocol,whichcontainsthreetiers.RESULTS:Inanyclientsysteminstalledwithwebbrowser,clinicianscouldlogintheeye-PACStoobservefundusimagesandreports.Multipurposeinternetmailextensions(MIME)typeofastructuredreportissavedaspdf/htmlwithreferencelinktorelevantfundusimageusingtheWADOsyntaxcouldprovideenoughinformationforclinicians.Somefunctionsprovidedbyopen-sourceOviyamcouldbeusedtoquery,zoom,move,measure,viewOICOMfundusimages.CONCLUSION:Suchwebeye-PACSincompliancetoWADOprotocolcouldbeusedtostoreandcommunicatefundusimagesandreports,thereforeisofgreatsignificanceforteleophthalmology.