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.

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.

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.

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.

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.

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.

Dynamic assessment of variations in pupil diameter using swept‑source anterior segment optical coherence tomography after phakic collamer lens implantation

Purpose:To dynamically assess variations in pupil diameter induced by changes in brightness in myopic eyes implanted with an implantable collamer lens(ICL,STAAR Surgical)with a central port.Methods:This prospective,observational single-center case series study comprised 65 eyes from 65 consecutive patients undergoing ICL implant.A modified commercially available swept-source Fourier-domain anterior segment optical coherence tomography(AS-OCT)device was used for imaging and performing dynamic pupillometry under changing light conditions before and after a mean follow-up interval of four months after surgery.Results:Preoperative mean pupil size under photopic conditions was 3.38±0.64 mm;after surgery,this increased to 3.48±0.61 mm.Mean pupil size under scotopic light conditions was 5.72±0.79 mm before surgery and 5.84±0.77 mm postoperatively.The differences between preoperative and postoperative pupil diameter in miosis and mydriasis were 0.10±0.44 mm(P=0.078)and 0.12±0.58 mm(P=0.098),respectively.The scotopic pupil exceeded the optic zone of the implanted lens in 39 eyes(60%).The mean central vault value was 412±177μm under maximum miosis and 506±190μm under maximum mydriasis.We found a positive correlation between vault and differences in pupil diameter under all light conditions(P<0.05).Conclusion:Dynamic AS-OCT enables a very precise determination of the pupillary diameter in the iris plane.The changes in the pupil diameter under different light conditions after the implantation of an ICL are related to the postoperative vault.

Dynamic assessment of variations in pupil diameter using swept-source anterior segment optical coherence tomography after phakic collamer lens implantation

Purpose To dynamically assess variations in pupil diameter induced by changes in brightness in myopic eyes implanted with an implantable collamer lens(ICL,STAAR Surgical)with a central port.Methods This prospective,observational single-center case series study comprised 65 eyes from 65 consecutive patients undergoing ICL implant.A modified commercially available swept-source Fourier-domain anterior segment optical coherence tomography(AS-OCT)device was used for imaging and performing dynamic pupillometry under changing light conditions before and after a mean follow-up interval of four months after surgery.Results Preoperative mean pupil size under photopic conditions was 3.38±0.64 mm;after surgery,this increased to 3.48±0.61 mm.Mean pupil size under scotopic light conditions was 5.72±0.79 mm before surgery and 5.84±0.77 mm postoperatively.The differences between preoperative and postoperative pupil diameter in miosis and mydriasis were 0.10±0.44 mm(P=0.078)and 0.12±0.58 mm(P=0.098),respectively.The scotopic pupil exceeded the optic zone of the implanted lens in 39 eyes(60%).The mean central vault value was 412±177μm under maximum miosis and 506±190μm under maximum mydriasis.We found a positive correlation between vault and differences in pupil diameter under all light conditions(P<0.05).Conclusion Dynamic AS-OCT enables a very precise determination of the pupillary diameter in the iris plane.The changes in the pupil diameter under different light conditions after the implantation of an ICL are related to the postoperative vault.

Five‑year outcomes of EVO implantable collamer lens implantation for the correction of high myopia and super high myopia

Background:To evaluate the long-term safety,efficacy,predictability,and stability of implantable collamer lens with a central hole(EVO ICL)implantation for correcting high myopia(HM)and super high myopia(SHM).Methods:This prospective study evaluated 83 eyes of 46 patients who were divided into groups based on their spherical equivalent refractive error(SE):HM group(−12 D≤SE<−6 D)and SHM group(SE<−12 D).They were followed up for 5 years after ICL implantation;assessments of uncorrected distance visual acuity(UDVA),corrected distance visual acuity(CDVA),manifest refractive error,axial length,intraocular pressure,corneal endothelial cell density,and vault were conducted,and a questionnaire was administered.ResuIts:At 5 years postoperatively,the safety indices of the HM and SHM groups were 1.03±0.10 and 1.32±0.39,and the efficacy indices were 0.83±0.25 and 0.86±0.32,respectively.In the HM group,60.47%and 79.07%of the eyes were within±0.50 D and±1.00 D of the attempted correction,while it was achieved for 22.50%and 47.50%of the eyes in the SHM group,respectively.The SE of the HM group decreased from−9.72±1.41 D preoperatively to 0.04±0.39 D 1 month postoperatively and−0.67±0.57 D 5 years postoperatively,while in the SHM group,it decreased from−15.78±3.06 D preoperatively to−0.69±0.97 D 1 month postoperatively and−1.74±1.19 D 5 years postoperatively.Conclusion:EVO ICL implantation is safe,effective,and predictable for correcting HM and SHM.CDVA improved more after surgery for SHM,but the growth of axial length still needs attention.

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后拱高的相关因素研究进展

近视是目前社会中十分常见的一种眼部疾病,常见影响因素有环境、遗传等,未有治愈药物,只能经矫正手术将视力恢复。在矫正近视手术中,使用率较高的为有晶状体眼后房型人工晶状体(implantable collamer lens, ICL)植入术,一般用于中高度近视患者,具有效果稳定、视觉好等优势。ICL植入术是否成功和术后拱高具有一定相关性,拱高太高或者太低都可能增加部分并发症发生风险。进而本文以ICL植入术后拱高为核心,综述引起术后拱高的多种影响因素。

ICL植入术矫正超高度近视的临床效果观察

目的:评估有晶状体眼后房型人工晶状体(ICL)矫正超高度近视的疗效及安全性。方法:对超高度近视患者20例40眼接受普通型ICL或散光型后房型人工晶状体(TICL)治疗,术前屈光度球镜-10.0～-18.0D,柱镜-0.25～-3.00D,等效球镜-15.32D,术后随访12mo,观察指标包括UCVA,BCVA、角膜地形图、主观和客观验光、角膜内皮细胞计数、眼压测量、裂隙灯检查。结果:术后12mo,裸眼视力≥0.8者占80.0%(32眼)。30.0%(12眼)的术眼BCVA较术前提高1行,15.0%(6眼)的术眼BCVA较术前提高2行。术后12mo术眼屈光度在±0.50D者达70.0%(28眼)。术前患者平均眼压为16±2.8mmHg,术后6mo平均眼压为17±3.4mmHg,术前术后相比较差异无显著性(t=0.518,P=0.776),术前患者角膜内皮细胞计数平均为2823±243.6个/mm2,术后6mo平均为2709±273.2个/mm2,术前术后比较无显著性差异(t=0.794,P=0.422)。未发生继发性青光眼、视网膜脱离及并发性白内障。结论:ICL植入术矫正超高度近视具有良好的疗效和安全性,远期效果有待进一步观察。

新型后房型有晶状体眼IOL植入术治疗伴有低度散光的高度近视

目的:观察伴有低度散光的高度近视眼患者行新型中央孔型有晶状体眼后房型人工晶状体(ICMO V4c)植入术的疗效及安全性,以期为此类患者的临床诊疗提供参考。方法:分析2015-01/2016-12在我院接受ICMO V4c植入术伴有低度散光的高度近视眼患者的临床资料,术后对患者进行1、3、6mo随访,分析比较术前和术后裸眼视力(uncorrected visual acuity,UCVA)和最佳矫正视力(best corrected visual acuity,BCVA)。比较术前和术后屈光度,球、柱镜及显性折射球面镜片等值(manifest refraction spherical equivalent,MRSE)。比较手术前后眼压、角膜内皮计数、前房深度、拱高和术后并发症情况。结果:患者术后UCVA和BCVA较术前均有所好转,手术前后比较差异有统计学意义(P<0.05)。所有患眼术前球镜、柱镜和MRSE在手术后均有所降低,且三组患者手术前后比较,差异均有统计学意义(t=38.510、20.100、34.300,P<0.01)。患者术后1、3mo术眼平均眼压升高(t=3.998、2.837,P<0.05),但术后6mo恢复正常(t=0.383,P>0.05);患者术后3、6mo患眼角膜内皮计数较术前减少(t=2.119、2.411,P<0.05)。患者手术后6mo内前房深度一定程度减少,在术后6mo时较手术后有所恢复,但仍低于术前水平(t=5.850、5.260、2.556,P<0.05)。患者术后患眼拱高整体水平平稳,未见明显波动。手术眼术后并发症发生率较低,积极处理后均有明显改善。结论:新型后房型有晶状体眼IOL植入术治疗合并有低度散光的高度近视眼的治疗效果满意,且并发症较少,是角膜屈光手术的有利补充。

有晶状体眼后房人工晶状体植入矫治高度近视的临床观察

目的:观察后房人工晶状体矫治高度近视的临床效果。方法:选择12例21眼高度近视(-9.50～-20.00D)患者表面麻醉下行后房人工晶状体植入,随访6mo。结果:术后平均裸眼视力超过术前平均最佳矫正视力(0.82>0.72);术前平均角膜内皮细胞密度为(2829±374)/mm2,术后平均角膜内皮细胞密度为(2716±312)/mm2,差异无显著性意义;手术前后眼压比较差异无显著性意义;手术无严重并发症发生。结论:后房人工晶状体矫治高度近视具有安全、有效、可预测性、可逆性;远期效果有待于进一步随访观察。

超高度近视有晶状体眼后房型人工晶状体植入术后残留近视的LASEK治疗效果

背景有晶状体眼后房型人工晶状体（PPC-ICL）植入术及有晶状体眼后房型散光人工晶状体（PPC—TICL）植入术是矫正高度近视及近视合并散光的主要方法，但术后常残留低度近视，需进一步行准分子激光上皮下角膜磨镶术（LASEK）矫治残留近视，这种疗法的有效性和安全性值得关注。目的观察PPC-ICL或PPC—TICL植入术治疗超高度近视及近视散光后LASEK治疗残留近视的安全性和有效性。方法采用前瞻性病例分析研究方法，收集2010年7月至2015年3月于贵州医科大学附属医院眼科就诊的等效球镜度≥-20．00D的超高度近视且接受PPC—ICL植入术或PPC—TICL植入术后6个月仍残留近视者9例14眼，其中行PPC．ICL植入术者4例8眼，行PPC—TICL植入术者5例6眼，术眼最佳矫正视力（BCVA）可提高2行以上。对术眼进行角膜厚度、角膜地形图、角膜内皮细胞计数、眼压和眼底检查，排除禁忌证后行LASEK，术后随访12个月，比较LASEK手术前后裸眼视力（UCVA）、BCVA、角膜上皮下雾状混浊（haze）、拱高、晶状体、眼压变化，评价PPC—ICL或PPC—TICL植入矫正超高度近视后用LASEK矫正残留近视的有效性和安全性。结果所有术眼手术顺利，术后术眼眼前节无明显炎症反应和严重并发症。术前、PPC—ICL植入术后6个月和LASEK术后12个月术眼UCVA、BCVA总体比较差异均有统计学意义（F=31．360、1．778，均P〈0．05），LASEK术后术眼UCVA均高于术前BCVA。术前、PFC—ICL植入术后6个月和LASEK术后12个月术眼屈光度分别为（-22．27±4．29）、（-3．75±2．25）和（-0．42±0．63）D，总体比较差异有统计学意义（F=46．370，P〈0．05），LASEK术后术眼屈光度明显低于术前、PPC—ICL植入术后，差异均有统计学意义（均P〈0．05）。术眼术前、PPC-ICL术后6个月及LASEK植入术后12个月眼压、角膜内皮细胞计数总体比较差异均无统计学意义（F=1．663、1．055，均P〉0．05）。LASEK术后12个月和PPC—ICL术后6个月拱高分别为（0．69±0．26）Film和（0．71±0．29）mm，差异无统计学意义（t=0．192，P〉0．05）。结论PPC—ICL或PPC-TICL植入术矫正超高度近视常残留一定程度的近视度，进一步用LASEK矫正残留近视安全、有效。

有晶状体眼人工晶状体植入术治疗超高度近视10年随访分析

目的探讨有晶状体眼人工晶状体(phakic IOL)植入术治疗超高度近视的长期预测性和安全性。方法对7例12只超高度近视眼植入phakic IOL,随访10年。比较术前术后裸眼视力、最佳矫正视力、屈光度、眼压和角膜内皮细胞计数等。结果术前平均屈光度(-16.12±3.21)D;平均最佳矫正视力0.68±0.36。术后1年平均裸眼视力0.71±0.25,最佳矫正视力0.83±0.31,残余屈光度(-0.50±-0.43)D;术后10年,平均裸眼视力0.32±0.12,最佳矫正视力0.50±0.24,残余屈光度(-2.50±-0.62)D。术前、术后1年和术后10年角膜内皮细胞计数分别为(2988±230)、(2837±225)、(1639±201)个/mm2;术前、术后1年和术后10年眼压分别为(16.87±2.32)、(17.12±2.45)、(18.60±3.24)mmHg。术后10年时瞳孔变形2眼;人工晶状体偏位2眼;继发性青光眼2眼;虹膜根部离断和萎缩2眼;白内障3眼;黄斑变性2眼。结论PhakicIOL植入术治疗超高度近视早期预测性好、安全,但手术长期并发症特别是角膜内皮细胞减少、白内障和继发性青光眼的发生需要引起关注。

ICL植入术对高度近视眼对比敏感度影响的研究

目的:研究有晶状体眼后房型人工晶状体(ICL)植入术对高度近视眼对比敏感度的影响。方法:选择行ICL植入术的高度近视眼患者27例52眼,用对比敏感度测试仪分别测试术前及术后1wk最佳矫正视力下的对比敏感度值。测试分为明视、明视眩光、暗视、暗视眩光四种模式,每种模式测试1.5,3,6,12,18c/deg五个空间频率。结果采用配对t检验进行统计学分析,以P<0.05表示差异有统计学意义。结果:ICL植入术后1wk裸眼视力4.8558±0.6960,术后1mo裸眼视力4.9519±0.1513,术后3mo裸眼视力4.8865±0.5929。术后1wk;1,3mo裸眼视力较术前裸眼视力均明显提高(P<0.05)。术后明视、暗视、明视眩光、暗视眩光四种模式下空间频率为1.5,3,6,12,18c/deg对比敏感度值较术前均有明显提高(P<0.05)。结论:高度近视眼植入ICL后对比敏感度较术前明显提高,视功能得到显著改善。

有晶状体眼后房型人工晶状体植入术对高度近视患者立体视觉的影响

目的：观察有晶状体眼人工晶状体植入术对高度近视患者立体视觉的影响,从视觉最高形式的角度评价有晶状体眼后房型人工晶状体（implantable contact lens,ICL）植入术的手术疗效。方法：分析2014-01/12于我院行有晶状体眼人工晶状体植入手术的高度近视患者46例92眼,年龄26.13±3.37（19~32）岁,其中男20例（43%）,女26例（57%）,对这些患者分别进行行术前、术后立体视觉分析。结果：术前患者双眼（92眼）等效球镜10.02±2.71D,术后等效球镜-0.02±0.25D,两组间有统计学差异（t=14.062,P=0.000）。术前近立体视盲患者6例,余患者近立体视为637.50±462.08arcsec,术后无患者近立体视盲,近立体视为126.09±165.78arcsec,两组间比较有统计学差异（Z=-5.725,P=0.000）;术前远立体视盲患者共12例,余患者远立体视为400.59±257.00arcsec,术后远立体视盲患者共2例,余患者远立体视为152.73±111.65arcsec,两组间比较有统计学差异（Z=-4.976,P=0.000）。结论：有晶状体眼人工晶状体植入手术可使高度近视患者双眼屈光状态变为正视从而获得清晰视觉,并有效改善其立体视觉。

晶状体矢高对有晶状体眼后房型人工晶状体植入术后拱高的影响

目的:研究眼前节光学相干断层扫描(AS-OCT)所测量的晶状体矢高(CLR)与眼前节参数的关系,及CLR对有晶状体眼后房型人工晶状体植入术(PPC-ICL)术后拱高的影响。方法:本次研究为回顾性研究。选取2017-07/2018-07在安徽医科大学第二附属医院眼科行PPC-ICL患者40例80眼,采用超声生物显微镜测量眼的水平睫状沟直径(hSTS)及晶状体曲率(LC),Pentacam眼前节分析仪测量水平白到白直径(hWTW)、前房深度(ACD)及术后拱高。AS-OCT测量CLR和水平径线的两虹膜角膜夹角连线(ATA)。结果:CLR与ACD(r=-0.706,P<0.01)、术后1a的拱高(r=-0.509,P<0.01)负相关,CLR与LC正相关(r=0.667,P<0.01),与hWTW(r=0.123,P=0.275)、ATA(r=0.208,P=0.065)、hSTS(r=0.147,P=0.194)无相关性,而ACD与术后1a拱高有正相关性(r=0.680,P<0.01)。结论:CLR与ACD、LC有明显相关性,对PPC-ICL术后拱高的预测有一定作用。