Clinical Effect Analysis of Posterior Chamber Intraocular Lens Implantation for Correcting High Myopia and Astigmatism

Objective:To explore the corrective effect of posterior chamber intraocular lens implantation with phakic eyes in the treatment of high myopia and astigmatism.Methods:From May 2023,the hospital began to collect the case data of diagnosis and treatment of high myopia and astigmatism.By May 2024,310 cases were included,all of which were treated with posterior chamber intraocular lens implantation.The visual acuity,astigmatism and axial position of the intraocular lens were observed before and after treatment.Results:At different time points after the operation,the patient’s vision was significantly improved compared with that before the operation(P<0.05),and the vision level was equal to or greater than the best-corrected vision before the operation.At different time points after the operation,the average rotation of the intraocular lens was less than 5 degrees.Astigmatism was significantly lower than that before the operation(P<0.05).After the operation,the intraocular pressure increased in 11 cases,accounting for 3.55%,with no adverse complications such as lens turbidity,glare and obvious halo occurring.Conclusion:The posterior chamber intraocular lens implantation with phakic eyes has an ideal correction effect in the treatment of high myopia and astigmatism,which can effectively improve the vision level of patients and reduce the degree of astigmatism,and has high effectiveness and safety.

Posterior Chamber IOL Implantation in Traumatic Cataract with Injured Complications

Twenty-five cases of posterior chamber IOL implantation intraumatic cataract with complications associated with primary injury werereported.The operating methods were described and the post-operative com-plications were discussed.Seventy-two percent of patients have the correctvision over 20/40.It is suggested that the posterior chamber IOL can be im-planted in traumatic cataract with some injured complications.EYE SCIENCE1992;8:111-112.

New Management of Angle-closure Glaucoma by Phacoemulsification with Foldable Posterior Chamber Intraocular Lens Implantation

Objective:To investigate the management of angle-closure glaucoma by phacoemulsification with foldable posterior chamber intraocular lens(PC-IOL)implantation.Design:Retrospective,noncontrolled interventional case series.Participants:In36eyes with angle-closure glaucoma(ACG),there were18eyes with primary acute angle-closure glaucoma(PACG),14eyes with primary chronic angle-closure glaucoma(PCCG),3eyes with secondary acute angle-closure glaucoma(SACG)and 1eye with secondary chronic angle-closure glaucoma(SCCG).Intervention:Phacoemulsification with posterior chamber intraocular lens implantation.Main Outcome Measures:Postoperative visual acuity,IOP,axial anterior chamber depth.Results:After a mean postoperative follow-up time of 8.81±7.45months,intraocular pressure was reduced from a preoperative mean of 23.81±17.84mmHg to a postoperative mean of 12.54±4.73mmHg(P=0.001).Mean anterior hamber depth was1.75±0.48mm preoperatively and2.29±0.38mm postoperatively(P=0.000).Best spectacle-corrected visual acuith in 36eyes ranged from0.01to0.7(20/200to20/30)postoperatively,which was better than preoperative VA ranging from hand movement to 0.4(20/50)(P=0.000).Conclusion:Phacoemulsification with posterior chamber foldable intraocular lens implantation can be a good alternative in treating angle-closure glaucoma,Eye Science 2000;16:22-28.

New Management of Malignant Glaucoma by Phacoemulsification with Posterior Chamber Foldable Intraocular Lens Implantation

Objective:To investigate the feasibility of phacoemulsification with posterior chamber foldable intraocular lens implantation in the management of malignant glaucoma. Patients and Methods:Fourteen patients with malignant glaucoma diagnosed in the Department of Glaucoma were enrolled in the study.12 patients developed malignant glaucoma after filtration surgery.1 developed after peripheral iridectomy.1 patient developed malignant glaucoma without any clear cause.Cataract phacoemulsification was performed.Posterior chamber intraocular foldable lens was implanted in 10 cases of patients.Results:All 14 patients were cured wiht normal intraocular pressure,normal anterior chamber depth and increased visual acuity.Conclusion:Phacoemulsification with posterior chamber foldable intraocular lens implantation is a good alternative in treating malignant glaucoma.

Membrane Formation on the Surface of Implanted Posterior Chamber Intraocular Lenses

Purpose:To study the prevention and treatment of the membrane formation on the lens surface after extracapsular cataract extraction(ECCE)with posterior chamber intraocular lens(PCIOL)implantation.Methods:We reviewed the records of 312 cataractous patients that had undergone ECCEwith PCIOLimplantation between1989and1993,Postoperatively all pa-tients were examined under slit-lamp microscopy.The membrane formation on the surface of PCIOLin pupilar area was divided into four grades.Two mem-branes of surgical removal were observed under a transmission electrom mi-croscopy.One PCIOLof surgical removal was observed under a scanning electron microscopy.Results;Of312 patients,21 had the membrane formation on the surface of the PCIOL postoperatively.The incidence of the membrane formation was6.7%.Comparisone with cases of senile cataract showed the incidence to be significantly the highest among;1.patients who had traumatic cataract(P<0.05);2.pa-tients with complicated cataract(P<0.05).Interoperatively residual lens corten and rupture of posterior capsule,interval time betwwen the first and second eye operations less than 1month are the main factors of menbrane formation.The ultrastructure in membrane and cytology on the lens surface showed that the membrane on the surface of PCIOLs is usually composed of acellular protein film and cellular elements,including macrophages.fibroblast-like cells,epithelioid cells,giant cells,fibroblasts and collagen fibrils,etc.Conclusions:The cellular response on the surface of an implanted PCIOLis a chonic foreign-body inflammatory reaction and the membrane of the surfaceof implanted PCIOL is a reactive membrane of the foreign-body.Eye Science1995;11:131-135.

Safety and visual outcomes following posterior chamber phakic intraocular lens bilensectomy

Background:To evaluate the safety,efficacy,refractive outcomes and causes for bilensectomy(phakic intraocular lens–pIOL–explantation with cataract surgery and pseudophakic intraocular lens implantation)in patients previously implanted with posterior chamber pIOLs.Methods:This multi-center retrospective study included 87 eyes of 55 patients who underwent bilensectomy for posterior chamber pIOL with a follow up time of 12 months.The uncorrected and best corrected distance visual acuities(UDVA,CDVA),endothelial cell density before and after bilensectomy were assessed,as well as the cause of bilensectomy and intra or postoperative complications.Results:There was a statistically significant improvement in uncorrected and best corrected visual acuities after bilensectomy(p=0.00).The main reason for bilensectomy was cataract development(93.1%of the cases),followed by miscalculation of lens size,and corneal edema.The endothelial cell count remained stable without a statistically significant change after surgery(p=0.67).The refractive efficacy index was 0.8,none of the patients lost lines of CDVA after surgery,73%of the patients were within±1 D(spherical equivalent)of the target refraction.Intraoperative complications were one posterior capsule rupture with the intraocular lens(IOL)implanted in the sulcus,and 3 eyes required the use of pupil expanders for adequate pupil dilation.Postoperatively,one eye developed retinal detachment.The three pIOLs models explanted were the Implantable Collamer Lens(ICL),Implantable Phakic Contact Lens(IPCL)and the Phakic Refractive Lens(PRL).Conclusions:Good safety and visual outcomes were observed 1 year after bilensectomy for posterior chamber phakic intraocular lenses(PC pIOLs).There were few intra and postoperative complications and there was no significant endothelial cell loss after the bilensectomy procedure.

Safety and visual outcomes following posterior chamber phakic intraocular lens bilensectomy

Background:To evaluate the safety,efficacy,refractive outcomes and causes for bilensectomy[phakic intraocular lens(plOL)explantation with cataract surgery and pseudophakic intraocular lens(IOL)implantation]in patients previously implanted with posterior chamber plOLs(PC plOLs).Methods:This multi-center retrospective study included 87 eyes of 55 patients who underwent bilensectomy for PC plOL with a follow-up time of 12 months.The uncorrected and corrected distance visual acuities(UDVA,CDVA),endothelial cell density before and after bilensectomy were assessed,as well as the cause of bilensectomy and intra or postoperative complications.Results:There was a statistically significant improvement in UDVA and CDVA after bilensectomy(P=0.00).The main reason for bilensectomy was cataract development(93.1%of the cases),followed by miscalculation of lens size,and corneal edema.The endothelial cell count remained stable without a statistically significant change after surgery(P=0.67).The refractive efficacy index was 0.8,none of the patients lost lines of CDVA after surgery,73%of the patients were within±1.0D(spherical equivalent)of the target refraction.Intraoperative complications were one posterior capsule rupture with the IOL implanted in the sulcus,and three eyes required the use of pupil expanders for adequate pupil dilation.Postoperatively,one eye developed retinal detachment.The three plOLs models explanted were the implantable collamer lens(ICL);implantable phakic contact lens(IPCL)and the phakic refractive lens(PRL).Conclusions:Good safety and visual outcomes were observed one year after bilensectomy for PC plOLs.There were few intra and postoperative complications and there was no significant endothelial cell loss after the bilensectomy procedure.

A Clinical Analysis of 120 Cases with Traumatic Cataract Treated by Extracapsular Cataract Extraction and Posterior Chamber Intraocular Lens Implantation

Extracapsular cataract extraction was performed combined with posterior chamber intraocular lens implantation on 120 inpatients (122 eyes) with traumatic cataract from 1992 to 1997. The results revealed that this combined operation can make most of them get useful visual acuity, although they were often accompanied with several comlicated eye injuries. We think the most important thing is to choose suitable opertion time, the reasonable operation method and take close followup after operation.

Clinical prediction of insufficient vaults after implantable collamer lens implantation

AIM:To determine the factors related to preoperative ocular characters that are predictive of insufficient vault(<250μm)after implantable collamer lens(ICL V4c;STAAR Surgical)implantation.METHODS:The participants underwent ICL surgery and were divided into the low(<250μm)and normal(250-1000μm)vault groups based on the postoperative vault at 3mo.The preoperative biometric parameters and clinical outcomes were compared between the two groups.The relationship between the 3-month vault values and preoperative ocular parameters were evaluated by Generalized estimating equations.RESULTS:Sixteen(23 eyes)and 36 patients(63 eyes)were in the low and normal vault groups,respectively.All implantation procedures were uneventful with no cataract formation in the early postoperative period.The sulcusto-sulcus lens rise(STSL)and iris ciliary angle(ICA)were correlated with vault at 3mo after surgery.Every 0.1 mm increase in STSL was associated with 38.9μm decrease in the postoperative 3-month vault.A rise of 1 degree in ICA is associated with a reduction of 4μm in vault.CONCLUSION:Eyes with a narrow ciliary sulcus are associated with a higher rate of low vault after ICL implantation,suggesting a need for adjustments to the ICL size in these patients.Evaluating the characteristics of the ciliary sulcus contributes valuable information to predict low vault after surgery.

超声乳化白内障摘除联合IOL植入术后眼前节结构变化及相关性分析

目的:探讨白内障患者超声乳化白内障摘除联合人工晶状体植入术(Phaco+IOL)术后眼前节结构变化及相关性分析。方法:回顾性病例研究。纳入北京大学第三医院眼科2018-01/2022-12间接受Phaco+IOL手术且在手术前后愿意接受超声生物显微镜(UBM)检查的白内障患者44例88眼,记录患者的性别、年龄、眼轴、角膜曲率和IOL资料。采用UBM测量手术前后各眼前节参数,包括前房深度(ACD)、巩膜睫状突角(SCPA)、虹膜晶状体接触距离(ILCD)、睫状体最大厚度(CBTmax)和巩膜突睫状体厚度(CBT0),图像处理软件Image J计算后房面积(PCA)。结果:术后ACD为3.50(2.89,3.68)mm,CBTmax为1.199±0.233 mm,CBT0为1.11(0.964,1.23)mm,PCA为1.21(0.926,1.57)mm^(2),较术前明显增大(均P<0.001)。术后ILCD为0.00(0.00,0.794)mm,较术前明显减小(P<0.001)。术后SCPA为37.9°(33.4°,46.6°),较术前无显著变化(P=0.908)。PCA增量在性别间存在差异(P=0.045),术后男性平均PCA增量为0.679 mm^(2),女性平均PCA增量为0.304 mm^(2)。年龄与术后SCPA、CBTmax、CBT0显著相关(P=0.002、0.004、0.009)。结论:Phaco+IOL术后后房面积扩大,CBTmax和CBT0均有显著增长,ACD增加,ILCD减小。术后PCA增加量与年龄、术前ACD、SCPA呈正相关,与术前CBT0呈负相关。不同品牌IOL对眼前节结构影响无显著差异。

高度近视有晶状体眼后房型人工晶状体植入术后患者视力恢复的影响因素

目的 探讨高度近视有晶状体眼后房型人工晶状体(ICL)植入术后患者视力恢复的影响因素。方法 前瞻性研究。选取2021年5月至2023年3月郑州大学第二附属医院收治的210例(420眼)行ICL植入术的高度近视患者作为研究对象。根据术后3个月视力恢复情况将患者分为恢复良好组(最佳矫正视力恢复≥0.3 D)、恢复不良组(最佳矫正视力恢复<0.3 D)。比较两组患者基线资料,采用Logistic回归分析影响患者视力恢复的因素,采用受试者工作特征曲线(ROC)分析Logistic回归模型对高度近视患者ICL植入术后视力恢复不良的预测价值。结果 术后3个月,恢复良好组的患者共149例298眼,恢复不良组的患者共61例122眼。两组患者性别、年龄、近视年限、体重指数、学业情况比较,差异均无统计学意义(均为P>0.05)。恢复不良组患者角膜散光度<1.30 D占比(55.74%)、角膜屈光度<45 D占比(59.02%)、匹茨堡睡眠质量指数(PSQI)<7分占比(63.93%)、中央平均曲率半径[(7.82±0.27) mm],均低于恢复良好组[83.89%、81.88%、85.91%及(7.90±0.24)mm],角膜前表面中央扁平子午线曲率(k1)[(43.27±1.43)D]、角膜前表面陡峭子午线曲率(k2)[(44.84±1.53)D]、拱高[(628.49±67.28)μm]均高于恢复良好组[(42.73±1.42)D、(44.12±1.47)D、(417.56±80.14)μm],差异均有统计学意义(均为P<0.05)。Logistic回归分析结果显示,角膜散光度、角膜屈光度、k1、k2、拱高、睡眠PSQI评分均为高度近视患者ICL植入术后患者视力恢复不良的独立影响因素(均为P<0.05)。ROC曲线分析显示,Logistic回归模型预测高度近视患者ICL植入术后视力恢复不良的ROC曲线下面积为0.938(95%CI:0.896~0.966),敏感度为83.61%,特异度为91.95%(P<0.05)。结论 角膜散光度、角膜屈光度、k1、k2、拱高、睡眠PSQI评分等均可影响高度近视ICL植入术后患者视力恢复,基于上述因素构建的Logistic回归模型对ICL植入术后患者视力恢复有较高预测价值。

有晶状体眼后房型人工晶状体植入术对患者眼表泪膜影响临床研究

目的:探究有晶状体眼后房型人工晶状体(ICL)植入术对眼表泪膜的影响,为临床防治ICL术后干眼症提供科学依据。方法:纳入行ICl手术矫正治疗的患者76例149眼为研究对象,根据术后3个月是否发生干眼症分为干眼组和对照组,比较两组术前3 d、术后7 d、术后1个月泪河高度(TMH)、首次泪膜破裂时间(NIF-BUT)、平均泪膜破裂时间(NIAvg-BUT)、睑板腺成像评分、脂质层评分、视觉质量评分(QoV)、眼表疾病指数(OSDI)的差异。结果:两组患者术前膜染色评分、睑缘形态评分、NIF-BUT评分、NIAvg-BUT评分、OSDI评分低于术后7 d与术后1个月(均P<0.05);干眼组术前OSDI评分高于对照组(P<0.05);干眼组术后7 d角膜染色评分、睑缘形态评分、NIF-BUT、NIAvg-BUT、Qov评分、OSDI评分高于对照组,TMH低于对照组(均P<0.05);干眼组术后1个月角膜染色评分、睑缘形态评分、睑板腺成像评分、NIF-BUT、NIAvg-BUT、QoV评分、OSD评分高于对照组,TMH低于对照组(均P<0.05)。Logistic回归分析结果显示,术后7 d、术后1个月角膜染色评分、睑缘形态评分、NIF-BUT、NIAvg-BUT、QOV评分及术后1个月睑板成像评分偏高是干眼症发生的独立危险因素,较高的TMH评分是干眼症发生的独立保护因素(均P<0.05)。结论:ICL植入术对患者眼表泪膜稳定性同样存在影响,应当注意术前评估及术后复查,给予针对性的术前预防性治疗和术后干预性治疗措施。

靶向端粒酶逆转录酶基因siRNA抑制兔早期后发性白内障的实验研究

目的观察靶向端粒酶逆转录酶(TERT)基因小干扰RNA(siRNA)对兔眼白内障术后早期晶状体后囊膜混浊的抑制作用。方法选取20只新西兰大白兔(40眼)纳入研究,采用自身对照法,分为2组:右眼为靶向TERT基因siRNA重组腺病毒TERT-siRNA-Adv组(实验组),左眼为阴性对照重组腺病毒Adv组(对照组),每组20眼;均实施超声乳化晶状体吸除术,术后前房内分别注入0.1 mL滴度为10^(9) PFU/mL的TERT-siRNA-Adv和阴性对照腺病毒;术后第1天、1周、2周、4周观察眼压、角膜水肿、前房闪辉及后发性白内障(PCO)分级情况,术后4周对术眼各组织行病理学检查及采用Western印迹法检测后囊膜细胞内α-平滑肌肌动蛋白(α-SMA)表达变化。结果实验组后囊膜混浊较对照组明显减轻(P<0.05);术后早期存在轻度眼压升高以及眼前节炎症反应(角膜水肿、前房闪辉),但于术后1周恢复,2组间差异无统计学意义(P>0.05)。与对照组相比,实验组后囊膜细胞内α-SMA相对表达量明显下降(P<0.05);组织病理学结果显示,实验组后囊膜下少量成纤维细胞增殖,对照组后囊膜下多层成纤维细胞增殖,囊膜结构紊乱;2组角膜、虹膜各层组织细胞排列整齐,结构完整,无明显炎性细胞浸润。结论靶向TERT基因siRNA可有效抑制晶状体上皮细胞增殖以及兔早期PCO的发生,且对眼前段各组织无明显毒性作用。

ICL植入术后拱高大于1000μm的中高度近视患者疗效观察

目的:观察有晶状体眼后房型人工晶状体(ICL)植入术后拱高大于1000μm的中高度近视患者的疗效。方法:回顾性研究。选择2014-01/2017-01在我院接受ICL植入术且术后拱高大于1000μm的中高度近视患者42例73眼。比较患者术前及术后1、3、6mo,1a以及末次随访时的视力、眼压、角膜内皮细胞密度、前房相关参数(房角、中央前房深度和前房容积)以及拱高的变化情况。结果:术后1、3、6mo,1a以及末次随访时的裸眼视力(UCVA)均优于术前(均P<0.05),房角、中央前房深度和前房容积均低于术前(均P<0.05),但术后各时间点的UCVA、房角、中央前房深度和前房容积比较均无差异(均P>0.05)。术后1mo时眼压低于术前(P<0.05),但术后3、6mo,1a以及末次随访时的眼压与术前比较均无差异(均P>0.05)。术后1、3、6mo,1a以及末次随访时的角膜内皮细胞密度与术前比较均无差异(均P>0.05)。术后1、3、6mo,1a以及末次随访时的拱高呈逐渐降低趋势,术后各时间点拱高比较均有差异(均P<0.05)。结论:ICL植入术后拱高大于1000μm的中高度近视患者的近远期疗效较好,对患者眼压、角膜内皮细胞无明显影响,术后前房结构较稳定,且拱高随时间推移呈下降趋势,密切观察即可,一般不需要更换。

20G灌注头辅助下无粘弹剂植入V4c-ICL矫正对高度近视早期调节功能的影响

目的:探讨20G灌注头辅助下无粘弹剂植入有晶状体眼后房型人工晶状体(V4c-ICL)对高度近视(HM)患者早期调节功能的影响。方法:选取HM患者493例(986眼)作为研究对象,按手术方式不同分为V4c-ICL植入术组(研究组,n=247)和全飞秒小切口基质透镜取出术(SMILE)组(对照组,n=246)。随访两组患者术前、术后1个月视力[裸眼视力(UDVA)、最佳矫正视力(BCVA)]、眼压、调节功能[正负相对调节(PRA/NRA)、单眼调节幅度(M-AMP)、远近水平隐斜、调节性集合与调节比值(AC/A)],行国家眼科研究所视功能问卷-25(NEI-VFQ-25)评分,记录并发症情况。结果:术后1个月,两组患者UDVA、BCVA均较术前升高,眼压降低(P<0.05),但两组间比较,差异无统计学意义(P>0.05);两组PRA、远近水平隐斜、AC/A比值较术前降低,M-AMP升高,其中研究组PRA、远水平隐斜、AC/A比值低于对照组,M-AMP高于对照组(P<0.05);两组NEI-VFQ-25评分均较术前升高(P<0.05),其中研究组除色觉(CV)维度外,其余各维度评分均高于对照组(P<0.05)。两组并发症总发生率比较,差异无统计学意义(P>0.05)。结论:SMILE与20G灌注头辅助下无粘弹剂下V4c-ICL矫治HM均可获得良好的术后视力,但相比SMILE,无粘弹剂下V4c-ICL可获得更好的双眼调节功能,改善患者视觉相关生活质量,值得临床优先选择。

超高度近视眼行有晶状体眼人工晶体植入术前后视网膜和脉络膜厚度及血流参数变化

目的通过光学相干断层扫描血管成像技术(OCTA)观察超高度近视眼行中央有孔型有晶状体眼后房型人工晶体前植入术(ICL-V4c)前后视网膜和脉络膜厚度、黄斑区及视盘旁视网膜血流密度的变化。方法选取2020年4月-2021年5月于首都医科大学附属北京同仁医院就诊且双眼等效球镜度(SE)≥±10.0 D的患者15例(30眼),所有眼均行ICL-V4c治疗。观察并比较患者术前及术后2 h、1周、1个月、9个月时视力、眼压的变化,并采用OCTA监测黄斑区视网膜和脉络膜厚度、黄斑区及视盘旁视网膜血流密度的变化。结果患者术后各时间点裸眼视力与术前最佳矫正视力比较差异无统计学意义(P>0.05);术后眼压呈下降趋势,但与术前比较差异无统计学意义(P>0.05);术后9个月拱高较术后1周降低,差异有统计学意义(P=0.002)。手术前后各时间点深层视网膜血流密度、黄斑区视网膜厚度、黄斑区脉络膜厚度、视盘旁放射状毛细血管网血流密度、神经纤维层厚度差异均无统计学意义(P>0.05),而术后2 h时,上下鼻颞4个方向的浅层视网膜血流密度均较术前明显下降,差异有统计学意义(P<0.05)。术后其余时间点各区域血流密度与术前比较差异均无统计学意义(P>0.05)。结论超高度近视眼行ICL-V4c植入术早期对浅层视网膜血流密度有影响,随时间延长可恢复至术前水平,对于黄斑部视网膜脉络膜厚度及深层视网膜血流密度、视盘旁毛细血管网血流密度和神经纤维层厚度无影响。

波前像差引导FS-LASIK矫正中高度近视患者术后1年眼前节变化

目的探讨波前像差引导FS-LASIK矫正中高度近视患者术后1年对眼前节结构的影响。方法收集2020年7月至2021年3月在徐州市第一人民医院就诊符合手术适应证且接受波前像差引导FS-LASIK患者共40例78眼的临床资料,分为中度近视组和高度近视组;分别于术前、术后1个月、术后1年行Pentacam AXL眼前节分析仪测量眼前节,包括角膜后表面Q值,全角膜像差,后表面高阶像差、球差、彗差,角膜后表面曲率、顶点高度及最薄点高度,前房深度(ACD)、前房容积(ACV)和前房角(ACA),并对比分析。结果中度近视组患眼角膜后表面曲率和角膜后表面Q值术前与术后1个月、术后1年相比差异均有统计学意义(均为P<0.05),高度近视组患眼角膜后表面最薄点高度和角膜后表面Q值术前与术后1年相比差异均有统计学意义(均为P<0.05)。中度近视组患眼角膜后表面垂直彗差术前与术后1个月、术后1年相比差异均有统计学意义(均为P<0.05),高度近视组患眼全角膜像差、角膜后表面球差和垂直彗差术前与术后1个月、术后1年相比差异均有统计学意义(均为P<0.05)。中度近视组及高度近视组患眼ACD、ACV术前与术后1个月、术后1年相比差异均有统计学意义(均为P<0.05),ACA术前术后相比差异均无统计学意义(均为P>0.05)。术后1年和术前球差变化值与术前等效球镜度(SE)相关性分析发现,高度近视组患眼球差变化值与术前SE呈中度相关(r=-0.349,P=0.025),而中度近视组患眼球差变化值与术前SE无明显相关性(r=-0.052,P=0.758)。结论波前像差引导FS-LASIK虽然对患者高阶像差有一定改善,但对角膜后表面和前房结构仍然有一定影响,主要集中在中央区,对周边影响相对较小,术后1年眼前节结构相对稳定。

优化ICL V4c植入术的临床研究进展

随着有晶状体眼后房型人工晶状体植入术的发展及可植入式接触镜(ICL)的不断改进,ICL V4c植入术目前已经成为矫正中高度近视的主流术式之一。术后拱高是评价手术安全性的重要指标,在常规ICL V4c植入手术的基础上,如何优化手术以获得更理想的拱高是近年来学者们研究的热点。本文以术前检查、术中手术设计以及术后随访为中心,总结分析优化ICL V4c植入手术的方案,为提高手术安全性提供帮助。

有晶状体眼后房型人工晶状体植入术术前检查操作规范专家共识(2023)

目前有晶状体眼后房型人工晶状体植入术临床应用广泛, 其安全性、有效性和稳定性已被临床验证。作为眼内手术, 术中和术后可能存在潜在风险。术前检查是避免出现并发症, 保证手术安全的重要保障。本专家共识依据国内外的重要文献及循证医学证据对术前检查提出推荐意见, 即除了常规的眼部查体外, 还需进行如下检查:主导眼、屈光度检查、角膜厚度、角膜曲率、角膜水平白到白间距、睫状沟直径、前房深度、晶状体厚度及矢高、瞳孔直径及暗瞳的测量。由于屈光手术患者对术后效果及视觉质量要求较高, 因此, 有条件单位可根据患者情况做以下眼部检查:视觉质量相关检查、干眼相关检查、视功能相关检查。本共识旨在规范有晶状体眼后房型人工晶状体植入术的术前检查, 以期为该领域开展此项手术的眼科医师提供参考和帮助。

超高度近视有晶状体眼后房屈光晶状体植入术后拱高的影响因素分析

目的:探讨超高度近视有晶状体眼后房屈光晶状体植入术后拱高的影响因素。方法:回顾性病例研究。选取2019-01/2021-01于我院行PC-PRL植入术的超高度近视患者40例77眼。术后随访至少2a,评估裸眼视力(UCVA)、最佳矫正视力(BCVA)和中央前房深度(ACD)、前房容积(ACV)、前房角(ACA)、晶状体厚度及术后拱高等眼前节参数,分析术后拱高的影响因素。结果:PC-PRL植入术后纳入患者UCVA和BCVA均较术前显著改善(P<0.001),术后2a平均安全指数(术后BCVA/术前BCVA)为1.36±0.32,平均有效指数(术后UCVA/术前BCVA)为1.23±0.31。术后2a拱高与术前ACD、术前ACV、术前ACA及晶状体厚度均具有一定的相关性,其中术前ACV和晶状体厚度对术后2a拱高具有显著影响。结论:超高度近视PC-PRL植入术安全有效,可显著改善视力,术前ACV和晶状体厚度是影响术后拱高的重要因素。