简介:血管生成素(angiopoietin,Ang)是特异性作用于血管内皮细胞的生长因子,主要由Ang-1和Ang-2组成;Tie2(tyrosinekinasethatcontainsimmunoglubin-likeloopsandepidernalgrowthfactor-similardomains2)是其共同受体.Ang-1促使血管成熟,维持血管稳定.Ang-2则拮抗Ang-1的作用,始动病理性新生血管形成.在眼部新生血管形成过程中Ang/Tie2受体途径起重要作用,抑制Ang/Tie2受体途径可以抑制眼部新生血管形成.
简介:目的:比较前节OCT与A超测量中央前房深度的差异,以评价前节OCT在眼前节参数测量中的准确性。方法:对白内障患者25例(26眼)使用前节OCT通过眼球瞳孔中心分别进行45度、90度、135度、180度方向扫描前房深度,每个方向连续测量3次,并且不对眼球施加任何外力。再用A超通过瞳孔中央连续测量前房深度5次。结果:前节OCT测量中央前房深度与A超测量结果两者有显著性差异;两者测量的稳定性相差明显,其中,前节OCT标准差(s)平均值0.02619mm;A超的标准差(s)平均值0.20773mm。结论:前节OCT测量中央前房深度与A超测量结果存在一定差异,前节OCT测量结果波动度、重复性优于A超。
简介:目的:对比观察TransPRK与LASEK术治疗高度近视的临床疗效。方法:选择行激光矫正的高度近视患者120例240眼。随机分TransPRK术组60例120眼,LASEK术组60例120眼。观察术后1wk眼部刺激症状、术后2wk视力、术后3mohaze的发病率、术后1a屈光度等。结果:两种方法均取得良好的手术效果。术后第1dTransPRK组无刺激症状者:86眼(71.7%),视物清楚,睁眼来医院复查。LASEK组术后81眼(67.5%)无刺激症状;术后2wk视力与术前矫正视力比较,TransPRK组109眼(90.8%),LASEK组87眼(72.5%);术后3mohaze的发病率,TransPRK组0级113眼,LASEK组0级109眼。结论:TransPRK组刺激症状明显轻于LASEK组,TransPRK组比LASEK组术后视力恢复快;TransPRK组比LASEK组术后haze的发病率低,以上均有统计学差异(P〈0.01);术后两组1、3、6、12mo两组视力、屈光状态、视觉质量均无统计学意义(P〉0.05)。两种手术方式矫正高度近视疗效无明显差异,均具有较好的安全性、有效性及可预测性。
简介:AIM:Toanalyzetheapplicationofmicrobubblecontrasttechnologyinthetreatmentofophthalmicdiseases,mainlyanalyzingitsadvantagesandexistingproblems.METHODS:Atotalof30representativeliteraturesabouttheapplicationofultrasoundcontrastagentingenetargetedtherapyathomeandabroadwerecollected,andfocusingonsortingouttheliteraturereportingthetreatmentofophthalmicdiseaseswithmicrobubblecontrasttechnologyinrecentyears,thenrecallingitsadvantagesandproblems,finallymakingreasonableassessmentonexistingproblemsandproposingpossiblesolutionstotheproblems.RESULTS:Duetoitsuniquesafetyandefficacy,thetreatmentofophthalmicdiseaseswithmicrobubblecontrasttechnologyhasincreasinglydrawntheattentionofclinicians,buttworelevantissuesshouldbeconsidered:first,thenatureofcontrastagentandthechoiceofcorrespondingultrasoundparameters;second,relativeincidenceoftissuebleeding,intravascularhemolysis,moderateorsevereallergyaswellasothersideeffects.CONCLUSION:Microbubblemaybecomethecarrieroftargetedtherapy,andasakindofnewnon-invasivedeliverysystem,theultrasoundcontrastagenthasbroadapplicationprospects,butitsapplicationinophthalmicresearchisstillinitsinitialstageandthesafetyofcontrast-enhancedultrasoundstillneedsfurtherstudy.
简介:AIM:Toevaluatetheefficacyofintralesionalradiofrequencyablationinthetreatmentofperiorbitalsyringomas.·METHODS:Wetriedtheintralesionalradiofrequencyablationfor64patientswithperiorbitalsyringomasfrom2007to2011.Theoperationwasperformedunder2.5loupemagnifications.Thehandpiecewasassembledwithaneedleelectrodeandconnectedtotheradiofrequencyablationapparatus.Theelectrodewastheninsertedintothetargetlesionsindermisanddeliveringinjurytothebaseofthesetumors.Resultswereassessedclinicallybycomparingpre-andpost-treatmentphotographsandpatientsatisfactionrates.·RESULTS:Clinicalimprovementincreasedwitheachsubsequenttreatmentsession.Thepercentofpatientswhoseclinicimprovementgradewere≥3aftereachsessionwasrespectively71.9%(Session1),83.3%(Session2),and100%(Session3).Thestatisticalresultsindicatedtheconcordanceoftheclinicalassessmentandthesatisfactionlevelofpatients(kappa=0.78ofthesession1;kappa=0.82ofthesession2).Themajorityofpatientshadgoodorexcellentcosmeticresults.Postoperatively,therewerenopermanentsideeffectsorrecurrences.·CONCLUSION:Asanewtechniqueofminimallyinvasion,theintralesionalradiofrequencyablationwasfoundtobeaneffective,inexpensive,highlypreciseandsafewayoftreatingperiorbitalsyringomas.
简介:目的比较面神经垂直段CT定位和解剖定位。方法15例开颅取脑后的颅底标本,对面神经管垂直段至外耳道后壁、外耳门后缘、颈静脉窝外侧壁与前壁水平之间距离进行直接测量,并与64层螺旋CT测量进行比较。结果尸骨直接测量与CT测量结果分别是(3.01±0.65)mm与(3.09±0.68)mm,(10.98±1.72)mm与(10.98±1.64)mm,(3.99±1.23)mm与(3.91±1.17)mm,(8.32±1.86)mm与(8.24±1.92)mm;两种方法测量值差异无统计学意义(P〉0.05)。结论CT测量方法可靠,测得值可信。CT扫描有助于明确诊断。
简介:<正>DearSir,IamDr.Zhong-ShanChenfromtheDepartmentofOphthalmology,WuhanGeneralHospitalofGuangzhouMilitaryCommand,HubeiProvince,China.Iwritetopresenttwocaseswithserpiginouschoroiditis(SC)whichisarare,usuallybilateral,chronic,progressiveinflammationofthechoroid,choriocapillarisandretinalpigmentepithelium.InthispaperwepresentedthedifferentoutcomesofSCpatientswithorwithoutsystemicandoculartreatmentsafterlong-termfollow-up.
简介:目的:探讨白内障术后屈光状态特点及术前前房深度(anteriorchamberdepth,ACD)与术后屈光状态的关系分析。方法:将96例96眼白内障患者随机分为两组,超声乳化组患者采用超声乳化吸除联合人工晶状体(intraocularlens,IOL)植入术治疗,小切口组患者采用小切口囊外摘除联合IOL植入术治疗。统计两组患者手术前后前房深度变化情况及术后屈光状态和屈光完全矫正值,分析其相关性。结果:超声乳化组患者术后ACD增厚0.74mm,小切口组患者术后ACD增厚0.78mm,术后两组患者ACD比较差异无统计学意义(P〉0.05)。超声乳化吸除联合IOL植入术和小切口囊外摘除联合IOL植入术后,两组患者ACD均明显加深(P〈0.05),且两组患者术后矫正视力均明显优于裸眼视力(P〈0.05)。两组患者术后屈光度主要为0-+1.0D(41.67%和54.16%)和+1.25-+2.0D(43.75%和33.33%)(P〉0.05)。结论:白内障IOL植入术后患者ACD明显加深,临床需充分考虑ACD的变化情况,提高IOL屈光度数计算准确性。