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国家自然科学基金(81100653)

作品数:9 被引量:45H指数:3
相关作者:竺向佳卢奕张可可何雯雯钱东瑾更多>>
相关机构:复旦大学更多>>
发文基金:国家自然科学基金上海市国际科技合作基金更多>>
相关领域:医药卫生更多>>

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Morphological features of anterior segment:factors influencing intraocular pressure after cataract surgery in nanophthalmos被引量:1
2020年
Purpose:To investigate the anterior segment in nanophthalmic eyes and their association with intraocular pressure after cataract surgery.Methods:Thirty-two nanophthalmic eyes(axial length[AL]<18.5 mm)in 18 patients and 35 normal eyes(21≤AL≤24.5 mm)in 35 controls who had undergone uneventful cataract surgery were included.Swept-source optical coherence tomography was used to compare the anterior segment structures between the two groups.The associations between the anterior segment characteristics of nanophthalmic eyes and postoperative intraocular pressure(IOP)were also investigated.Results:The IOP-lowering effect of cataract surgery was remarkably insufficient in nanophthalmic eyes.Peripheral anterior synechiae(PAS)were observed in 56%(18/32)of nanophthalmic eyes,and a characteristic boomerangshaped iris was observed in 28%(9/32).The anterior surface of the iris seemed“smoother”in nanophthalmic eyes than in normal eyes.Schlemm’s canal(SC)diameter,SC area,trabecular meshwork(TM)thickness,TM width,and TM area were generally smaller in the nanophthalmic eyes.Younger age,higher preoperative IOP,broader PAS,and smaller SC area were main contributors to higher postoperative IOP.AL and SC diameter may also be of great importance in IOP prediction in patients without glaucoma surgery and PAS.Conclusions:The morphological features of the anterior segment in nanophthalmic eyes are significantly different from those of normal eyes.Influencing factors such as age,AL,preoperative IOP,extent of PAS,SC and TM size could all be prognostic for IOP after cataract surgery in nanophthalmic eyes.
Qiang LuWenwen HeYi LuXiangjia Zhu
关键词:NANOPHTHALMOS
Morphological features of anterior segment:factors influencing intraocular pressure after cataract surgery in nanophthalmos
2023年
Purpose:To investigate the anterior segment in nanophthalmic eyes and their association with intraocular pressure after cataract surgery.Methods:Thirty-two nanophthalmic eyes(axial length[AL]<18.5 mm)in 18 patients and 35 normal eyes(21.0≤AL≤24.5 mm)in 35 controls who had undergone uneventful cataract surgery were included.Swept-source optical coherence tomography was used to compare the anterior segment structures between the two groups.The associations between the anterior segment characteristics of nanophthalmic eyes and postoperative intraocular pressure(IOP)were also investigated.Results:The IOP-lowering effect of cataract surgery was remarkably insufficient in nanophthalmic eyes.Peripheral anterior synechiae(PAS)were observed in 56%(18/32)of nanophthalmic eyes,and a characteristic boomerangshaped iris was observed in 28%(9/32).The anterior surface of the iris seemed"smoother"in nanophthalmic eyes than in normal eyes.Schlemm's canal(SC)diameter,SC area,trabecular meshwork(TM)thickness,TM width,and TM area were generally smaller in the nanophthalmic eyes.Younger age,higher preoperative IOP,broader PAS,and smaller SC area were main contributors to higher postoperative IOP.AL and SC diameter may also be of great importance in IOP prediction in patients without glaucoma surgery and PAS.Conclusions:The morphological features of the anterior segment in nanophthalmic eyes are significantly different from those of normal eyes.Influencing factors such as age,AL,preoperative IOP,extent of PAS,SC and TM size could all be prognostic for IOP after cataract surgery in nanophthalmic eyes.Trial registration:ClinicalTrails.gov,Trial registration number:NCT02182921,Registered 8 July 2014.
Qiang LuWenwen HeYi LuXiangjia Zhu
关键词:NANOPHTHALMOS
三种人工晶状体计算公式对高度近视眼并发性白内障的预测误差比较被引量:25
2017年
目的研究3种IOL计算公式预测高度近视眼并发性白内障患者白内障摘除术后屈光状态的误差比较。方法回顾性系列病例研究。收集复旦大学附属眼耳鼻喉科医院眼科2014年12月至2015年4月的高度近视眼并发性白内障患者的临床资料,共103例(103只眼),眼轴长度均≥26 mm,年龄39.0~77.0岁,平均(60.2±8.8)岁;男性45例;女性58例。所有患者均行常规术前检查以及IOLMaster测量,采用颞侧透明角膜切口超声乳化白内障吸除并植入HumanOptics后房型IOL。使用SPSS19.0软件进行统计学分析,采用重复测量的方差分析比较术后1个月实际屈光度数与应用SRK/T,Holladay 1及Haigis公式计算所植入IOL的理论屈光度数的差别,以及按照眼轴长度、角膜屈光力(K值)及角膜散光度数大小分组比较,并用Bland-Altman图分析3种公式的预测一致性。后用多元线性回归分析各公式的误差来源。结果3种计算公式预测中绝大多数患者均发生了远视漂移现象。SRK/T、Holladay 1及Haigis公式平均误差分别为(0.70±0.89)D、(1.20±0.88)D及(0.60±0.88)D,平均绝对误差分别为(0.81±0.79)D、(1.23±0.84)D、(0.76±0.74)D。Holladay 1公式的平均误差及绝对误差均远高于其他两者,差异有统计学意义(F=86.31,P〈0.01)。Holladay 1公式误差在±0.50 D范围的患者比例(20.4%,21/103)也低于SRK/T公式(38.8%,40/103)及Haigis公式(45.6%,47/103),差异有统计学意义(χ2=8.41,P〈0.01;χ2=14.84,P〈0.01)。Bland-Altman分析显示3种公式在长眼轴患者中预测一致性均在临床可接受范围。随眼轴长度增加,K值增大及角膜散光增大,平均误差及绝对误差在3种公式中均增大,而在眼轴长度〉30 mm及K值≤43.00 D时Haigis公式的平均绝对误差小于SRK/T公式,差异有统计学意义(F=63.26、63.94,P均〈0.01)。在误差来源方面,SRK/T公式误差�
竺向佳何雯雯杜钰钱东瑾戴锦晖卢奕
关键词:白内障近视晶体
晶状体蛋白的外消旋化及其在白内障发病机制中的研究进展被引量:4
2014年
外消旋化是老年人晶状体蛋白中重要的翻译后修饰类型.多项研究发现,随着年龄的增长,α-、β-及γ-晶状体蛋白中的部分L型氨基酸残基倾向于通过外消旋化反应转化为D型氨基酸残基,导致晶状体蛋白的构象改变,聚合形成的大分子蛋白质在晶状体核区和皮质中逐渐积累,晶状体蛋白失去了原有功能而不能维持晶状体的透明度.外消旋化在晶状体蛋白年龄相关性改变中的效应和参与程度,及其对白内障发生与进展的具体机制都值得进一步研究.
张可可竺向佳卢奕
关键词:晶状体蛋白白内障翻译后修饰
人晶状体细胞膜衰老模型的建立
2012年
目的建立人晶状体细胞膜年龄相关性改变的体外实验模型。方法取3对完整晶状体(30、41、63岁),将每对中的1个晶状体经50℃加热20h,与对侧未加热的晶状体均行冷冻切片。将上述切片行6-酰基-2-二甲氨基萘染色,然后在双光子共聚焦显微镜下观察。测量距晶状体中心处不同位点的总极化图像灰度(即总极化值),以评估相应位点细胞膜流动性的变化。另取2个晶状体(28、47岁)的冷冻切片,将切片于50℃加热20h,观察加热与未加热切片的细胞膜流动性改变情况。结果完整晶状体经加热后,中央区域的细胞膜流动性较对侧未加热晶状体明显增加,加热后的晶状体切片较加热前细胞膜流动性亦明显增加。结论晶状体50℃加热是模拟晶状体细胞膜流动性年龄相关性改变的有效模型,可用于晶状体细胞膜流动性方面的研究。
竺向佳叶鸿飞卢奕
关键词:晶状体细胞膜流动性
Measurement of crystalline lens tilt in high myopic eyes before cataract surgery using swept-source optical coherence tomography被引量:2
2020年
Background:To measure the crystalline lens tilt in eyes with various degrees of myopia before cataract surgery using swept-source optical coherence tomography(SS-OCT).Methods:We used SS-OCT(IOLMaster 700)to scan 131 emmetropic eyes(axial length<24.5 mm),25 mild/moderate myopic eyes(axial length 24.5–26 mm),and 123 high myopic eyes(52,29,and 42 eyes with axial lengths of 26–28,28–30,and>30 mm,respectively)as part of the routine preoperative examination before cataract surgery.SS-OCT involved B-scans along six meridians.The data were analyzed to assess the magnitude and orientation of the lens tilt and their correlation with other optical biometric parameters.Result:The mean tilt was 3.36±0.98°in emmetropic eyes,3.07±1.04°in mild/medium myopic eyes,and 2.35±1.01°in high myopic eyes.Tilt correlated significantly and inversely with axial length(Pearson’s r=−0.427,P<0.001).The crystalline lens tilt predominantly faced the upper outer quadrant relative to the visual axis,symmetrically in both eyes,with mean angles of 24.32°and 147.36°in the right and left eyes,respectively.The variability in the lens tilt direction increased with increasing axial length(χ^(2) test,P<0.001).Conclusion:The magnitude of crystalline lens tilt decreased with increasing axial length.The direction of tilt was predominantly towards the upper outer quadrant in both eyes.The variability in the tilt orientation increased with increasing axial length.Trial registration:NIH(clinicaltrial.gov),NCT03062085.Registered 23 February 2017.
Qiang LuWenwen HeDongjin QianYi LuXiangjia Zhu
关键词:ORIENTATIONMAGNITUDE
晶状体细胞膜流动性与白内障发病机制的相关研究被引量:2
2013年
从流动镶嵌模型到脂筏,细胞膜的结构模型研究不断进展。细胞膜的流动性是指构成细胞膜的脂质和蛋白质分子的运动性。对细胞膜流动性的观察方法包括自旋标记电子顺磁共振和荧光探针等。某些可溶性蛋白与细胞膜的相互作用,能改变其流动性。目前对于晶状体细胞膜流动性的研究十分有限,其脂质构成的特殊性,暗示了晶状体细胞膜流动性的特殊性。随年龄增长,晶状体核区细胞间弥散途径的建立,合胞体超结构的形成,可能需要其细胞膜流动性发生相应改变。以晶状体细胞膜流动性研究为切入点,有助于深入阐明白内障的发病机制。(国际眼科纵览,2013,37:19—24)
竺向佳张可可卢奕
关键词:细胞膜流动性晶状体
Measurement of crystalline lens tilt in high myopic eyes before cataract surgery using swept-source optical coherence tomography
2022年
Background:To measure the crystalline lens tilt in eyes with various degrees of myopia before cataract surgery using swept-source optical coherence tomography(SS-OCT).Methods:We used SS-OCT(lOLMaster 700)to scan 131 emmetropic eyes(axial length<24.5 mm);25 mild/moderate myopic eyes(axial length 24.5-26 mm),and 123 high myopic eyes(52,29,and 42 eyes with axial lengths of 26-28,28-BO,and>30 mm,respectively)as part of the routine preoperative examination before cataract surgery.SS-OCT involved B-scans along six meridians.The data were analyzed to assess the magnitude and orientation of the lens tilt and their correlation with other optical biometric parameters.Result:The mean tilt was 3.36±0.98。in emmetropic eyes,3.07±1.04° in mild/medium myopic eyes,and 2.35±1.01° in high myopic eyes.Tilt correlated significantly and inversely with axial length(Pearson,sr=-0.427,P<0.001).The crystalline lens tilt predominantly faced the upper outer quadrant relative to the visual axis,symmetrically in both eyes,with mean angles of 24.32°and 147.36°in the right and left eyes,respectively.The variability in the lens tilt direction increased with increasing axial length(x2 test,P<0.001).Conclusion:The magnitude of crystalline lens tilt decreased with increasing axial length.The direction of tilt was predominantly towards the upper outer quadrant in both eyes.The variability in the tilt orientation increased with increasing axial length.Trial registration:NIH(clinicaltrial.gov),NCT03062085.Registered 23 February 2017.
Qiang LuWenwen HeDongjin QianYi LuXiangjia Zhu
关键词:ORIENTATIONMAGNITUDE
小切口超声乳化白内障摘出术后早期角膜屈光状态和中央角膜厚度对视力的影响被引量:12
2014年
背景 小切口超声乳化白内障摘出联合人工晶状体(IOL)植入术是目前白内障治疗的主流术式,其术后视力的恢复受术中、术后并发症以及术后角膜屈光和中央角膜厚度(CCT)改变的影响,其中角膜屈光改变和CCT对视力波动的影响研究较少. 目的 分析小切口超声乳化白内障摘出术后早期患者的视力波动情况及其影响因素.方法 采用系列病例观察研究设计,选取2011年11月至2012年4月于复旦大学附属眼耳鼻喉科医院行2.6mm颞侧透明角膜切口超声乳化白内障摘出联合折叠型IOL植入术的年龄相关性白内障患者25例29眼,白内障手术均由同一医师完成.分别于术前1d,术后1、3、14d及术后1个月、2个月进行电脑验光和主觉验光,检查术眼裸眼视力(UCVA)和最佳矫正视力(BCVA),用Pentacam眼前节分析系统测量CCT及角膜散光值,结果均采用矢量分析法.对术眼手术前后UCVA、BCVA、等效球镜度(SE)、角膜散光值和CCT进行比较,并分析UCVA和BCVA的影响因素. 结果 术眼术后1d平均UCVA(LogMAR)为0.52±0.06,2个月为0.64±0.07,差异有统计学意义(t=-3.051,P<0.05);术眼术后1d平均BCVA(LogMAR)为0.24±0.04,术后2个月为0.13±0.04,差异有统计学意义(t=-3.031,P<0.05).术眼术后1、14、60 d的SE差异有统计学意义(F=3.562,P=0.039),术后1d的SE为(-1.74±0.28)D,术后14 d为(-1.99±0.27)D,差异有统计学意义(t=2.515,P<0.05);术眼术后2个月SE为(-1.69±0.24)D,明显低于术后14d的SE值,差异有统计学意义(=-2.987,P<0.05).术眼术前J0成分为(0.06±0.06)D,术后1d增加到(0.29±0.08)D,差异有统计学意义(t=-4.625,P<0.01);术后14 d J0成分为(0.38±0.07)D,明显高于术后1d值,差异亦有统计学意义(t=-7.858,P<0.01);术后2个月J0成分为(0.27±0.07)D,与术后14d比较差异有统计意义(t=-5.649,P<0.01).术眼手术前后CCT的差异有统计学意义(F=
竺向佳周鹏何雯雯张可可卢奕
关键词:超声乳化白内障摘出术中央角膜厚度散光
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