Effectiveness and safety of early lens extraction during par plana vitrectomy for proliferative diabetes retinopathy with mild cataract:a randomized clinical trial

●AIM:To evaluate the effectiveness and safety of early lens extraction during pars plana vitrectomy(PPV)for proliferative diabetic retinopathy(PDR)compared to those of PPV with subsequent cataract surgery.●METHODS:This multicenter randomized controlled trial was conducted in three Chinese hospitals on patients with PDR,aged>45y,with mild cataracts.The participants were randomly assigned to the combined(PPV combined with simultaneously cataract surgery,i.e.,phacovitrectomy)or subsequent(PPV with subsequent cataract surgery 6mo later)group and followed up for 12mo.The primary outcome was the change in best-corrected visual acuity(BCVA)from baseline to 6mo,and the secondary outcomes included complication rates and medical expenses.●RESULTS:In total,129 patients with PDR were recruited and equally randomized(66 and 63 in the combined and subsequent groups respectively).The change in BCVA in the combined group[mean,36.90 letters;95%confidence interval(CI),30.35–43.45]was significantly better(adjusted difference,16.43;95%CI,8.77–24.08;P<0.001)than in the subsequent group(mean,22.40 letters;95%CI,15.55–29.24)6mo after the PPV,with no significant difference between the two groups at 12mo.The overall surgical risk of two sequential surgeries was significantly higher than that of the combined surgery for neovascular glaucoma(17.65%vs 3.77%,P=0.005).No significant differences were found in the photocoagulation spots,surgical time,and economic expenses between two groups.In the subsequent group,the duration of work incapacity(22.54±9.11d)was significantly longer(P<0.001)than that of the combined group(12.44±6.48d).●CONCLUSION:PDR patients aged over 45y with mild cataract can also benefit from early lens extraction during PPV with gratifying effectiveness,safety and convenience,compared to sequential surgeries.

Differential distribution of fibrovascular proliferative membranes in 25-gauge vitrectomy for proliferative diabetic retinopathy

AIM:To analyze the distribution of fibrovascular proliferative membranes(FVPMs)in proliferative diabetic retinopathy(PDR)patients that treated with pars plana vitrectomy(PPV),and to evaluate the outcomes separately.METHODS:This was a retrospective and cross-sectional study.Consecutive 25-gauge(25-G)PPV cases operated for PDR from May 2018 to April 2020.According to the FVPMs images outlined after operations,subjects were assigned into three groups:arcade type group,juxtapapillary type group,and central type group.All patients were followed up for over one year.General characteristics,operation-related variables,postoperative parameters and complications were recorded.RESULTS:Among 103 eyes recruited,the FVPMs distribution of nasotemporal and inferiosuperioral was significantly different(both P<0.01),with 95(92.23%)FVPMs located in the nasal quadrants,and 74(71.84%)in the inferior.The eyes with a central FVPM required the longest operation time,with silicon oil used in most patients,generally combined with tractional retinal detachment(RD)and rhegmatogenous RD,the worst postoperative bestcorrected visual acuity(BCVA)and the highest rates of recurrent RD(all P<0.05).FVPM type,age of onset diabetes mellitus,preoperative BCVA,and combined with tractional RD and rhegmatogenous RD were significantly associated with BCVA improvement(all P<0.05).Compared with the central type group,the arcade type group had higher rates of BCVA improvement.CONCLUSION:FVPMs are more commonly found in the nasal and inferior mid-peripheral retina in addition to the area of arcade vessels.Performing 25-G PPV for treating PDR eyes with central FVPM have relatively worse prognosis.

Effects of vitrectomy combined with internal limiting membrane peeling in patients with diabetic macular edema

BACKGROUND Diabetic macular edema(DME),a chronic microvascular complication of diabetes,is a leading cause of visual impairment and blindness.Pars plana vitrectomy(PPV)can restore the normal macular structure and reduce macular edema,whereas internal limiting membrane(ILM)peeling is used to treat tractional macular diseases.Despite the advantages,there is limited research on the combined effects of PPV with ILM peeling.AIM To observe the effects of PPV combined with ILM peeling on postoperative central macular thickness(CMT),best-corrected visual acuity(BCVA),cystoid macular edema(CME)volume,and complications in patients with DME.METHODS Eighty-one patients(92 eyes)diagnosed with DME at the Beijing Shanqu Liangxiang Hospital between January and December 2022 were randomly divided to undergo PPV alone(control group:41 patients,47 eyes)or PPV+ILM peeling(stripping group:40 patients,45 eyes);a single surgeon performed all surgeries.The two groups were compared preoperatively and 1 and 3 months postoperatively.RESULTS Preoperatively,both groups had comparable values of CMT,BCVA,and CME volume(P>0.05).After surgery(both 1 and 3 months),both groups showed significant reductions in CMT,BCVA,and CME volume compared to preoperative levels,with the stripping group showing more significant reductions compared to the control group(P<0.05).Further repeated-measures ANOVA analysis for within-group differences revealed significant effects of group and time,and interaction effects for CMT,BCVA,and CME volume(P<0.05).There were no significant differences in the incidence of complications between the groups(retinal detachment:control=2,stripping=1;endophthalmitis:Control=4,stripping=1;no cases of secondary glaucoma or macular holes;χ^(2)=0.296,P=0.587).CONCLUSION PPV with ILM peeling can significantly improve the visual acuity of patients with DME,reduce CMT,and improve CME with fewer complications.

Individual idea about the micro-invasive aspiration and drainage of intracranial hematoma

AIM： This study aimed to expound the individual idea of micro-invasive surgery from pre-operative preparation, intra-operative processing and post-operative management. METHODS： Pre-operative preparation was improved by analyzing pathological factors and hematoma property, and considering patients＇ age, basic disease, blood pressure control, with persistent haemorrhagia/rehaemorrhagia or not, operative occasion choice, positioning and other procedures. In the surgery, positioner was used. Initial aspiration volume was cautiously controlled. After operation, vital signs of patients were kept stable by cautiously using hematoma liquefacient and combining with free radical scavenger. RESULTS： The core content of individual micro-invasive surgery was mainly to relieve intracranial pressure. Under the condition of sufficient pre-operative preparation known by patients＇ family members, precise positioning was determined and individual therapeutic regimen was made. Meanwhile, caution should be taken in hematoma aspiration. Liquefaction and drainage should be paid more attention, and complications were processed actively. CONCLUSION： During the process of micro-invasive evacuation of intracranial hematoma for treating cerebral hemorrhage, attention should be paid to analyzing cerebral hematoma etiology and pathophysiological mechanism, and individual idea should be considered in surgical treatment aiming at patients＇ concrete disease condition.

Chronic hypotony management using endoscopy-assisted vitrectomy after severe ocular trauma or vitrectomy

·AIM: To report outcomes of endoscopy-assisted vitrectomy(EAV) in patients with chronic hypotony following severe ocular trauma or vitrectomy.·METHODS: This was a retrospective, noncomparative case series. Ciliary bodies were evaluated using ultrasound biomicroscopy pre-operatively and direct visualisation intraoperatively. All selected individuals(seven patients/seven eyes) underwent EAV. Removal of ciliary membrane and traction, gas/silicone oil tamponade(GT/SOT), and scleral buckling(SB) were performed in selected eyes. Outcome measurements mainly included intraocular pressure(IOP) and best-corrected visual acuity(BCVA).·RESULTS: Seven eyes from 7 male aphakic patients with a mean age of 45(range, 20-68)y were included in this study;the average follow-up time was 12(9-15)mo. GT was performed in 2 eyes;membrane peeling(MP) and SOT in 2 eyes;and MP, SOT, and SB in 3 eyes. The mean preand post-operative IOP were 4.5(range, 4.0±0.11 to 4.8±0.2) mm Hg and 9.9(range, 5.6±0.17 to 12.1±0.2) mm Hg at 52wk(12mo), respectively. BCVA improved in six eyes;one eye still showed light perception, and no bulbi phthisis was observed.·CONCLUSION: Endoscopy offers improved judgment and recognition and has an improved prognosis for chronic hypotony. Therefore, endoscopy can be an effective and promising operative technique for chronic traumatic hypotony management.

Analysis of postoperative ocular surface changes and intervention effect after pars plana vitrectomy in meibomian gland dysfunction dry eye patients

AIM:To observe ocular surface changes after phacovitrectomy in patients with mild to moderate meibomian gland dysfunction(MGD)-type dry eye and track clinical treatment response using a Keratograph 5M and a Lipi View interferometer.METHODS:Forty cases were randomized into control group A and treatment group B;the latter received meibomian gland treatment 3d before phacovitrectomy and sodium hyaluronate before and after surgery.The average non-invasive tear film break-up time(NITBUTav),first noninvasive tear film break-up time(NITBUTf),non-invasive measured tear meniscus height(NTMH),meibomian gland loss(MGL),lipid layer thickness(LLT)and partial blink rate(PBR)were measured preoperatively and 1wk,1 and 3mo postoperatively.RESULTS:The NITBUTav values of group A at 1wk(4.38±0.47),1mo(6.76±0.70),and 3mo(7.25±0.68)were significantly lower than those of group B(7.45±0.78,10.46±0.97,and 11.31±0.89;P=0.002,0.004,and 0.001,respectively).The NTMH values of group B at 1wk(0.20±0.01)and 1mo(0.22±0.01)were markedly higher than those of group A(0.15±0.01 and 0.15±0.01;P=0.008 and P<0.001,respectively);however,there was no difference at 3mo.The LLT of group B at 3mo[91.5(76.25-100.00)]significantly exceeded that of group A[65.00(54.50-91.25),P=0.017].No obvious intergroup difference was found in MGL or PBR(P>0.05).CONCLUSION:Mild to moderate MGD dry eye worsens in the short term after phacovitrectomy.Preoperative cleaning,hot compresses,and meibomian gland massage as well as preoperative and postoperative sodium hyaluronate promote the rapid recovery of tear film stability.

Axial length,vitreoretinal pathology,and anterior chamber depth can predict postoperative refractive outcomes in phacovitrectomy/silicone oil removal

AIM:To evaluate the postoperative refractive prediction error(PE)and determine the factors that af fect the refractive outcomes of combined pars plana vitrectomy(PPV)or silicone oil removal(SOR)with cataract surgery.METHODS:The study is a retrospective,case-series study.Totally 301 eyes of 301 patients undergoing combined PPV/SOR with cataract surgery were enrolled.Eligible individuals were separated into four groups according to their preoperative diagnoses:silicone oil-filled eyes after PPV(group 1),epiretinal membrane(group 2),macular hole(group 3),and primary retinal detachment(RD;group 4).The variables af fecting postoperative refractive outcomes were analyzed,including age,gender,preoperative best-corrected visual acuity(BCVA),axial length(AL),keratometry average,anterior chamber depth(ACD),intraocular tamponade,and vitreoretinal pathology.The outcome measurements include the mean refractive PE and the proportions of eyes with a PE within±0.50 diopter(D)and±1.00 D.RESULTS:For all patients,the mean PE was-0.04±1.17 D,and 50.17%of patients(eyes)had a PE within±0.50 D.There was a significant difference in refractive outcomes among the four groups(P=0.028),with RD(group 4)showing the least favorable refractive outcome.In multivariate regression analysis,only AL,vitreoretinal pathology,and ACD were strongly associated with PE(all P<0.01).Univariate analysis revealed that longer eyes(AL>26 mm)and a deeper ACD were correlated with hyperopic PE,and shorter eyes(AL<26 mm)and a shallower ACD were correlated with myopic PE.CONCLUSION:RD patients have the least favorable refractive outcome.AL,vitreoretinal pathology,and ACD are strongly associated with PE in the combined surgery.These three factors affect refractive outcomes and thus can be used to predict a better postoperative refractive outcome in clinical practice.

A novel approach for 25-gauge transconjunctival sutureless vitrectomy to evaluate vitreous substitutes in rabbits

AIM:To improve the standard three-port vitrectomy for establishing and evaluating an endotamponade model in rabbits.METHODS:Three ports were prepared near the third eyelid of rabbits,and the infusion port was placed at the inferior nasal quadrant with the inserted cannula linking with a self-designed handheld rigid infusion catheter.All right eyes of rabbits underwent a modified 25-gauge vitrectomy and were subsequently filled with balanced salt solution,silicone oil,and eight-arm polyethylene glycols(8-arm PEGs)hydrogel separately for comparison.Ophthalmic examinations were performed regularly to record the changes after the surgery.RESULTS:Successful vitrectomy was achieved among 44 chinchilla rabbits.The mean operation time was 4.51±1.25min.Four eyes(9.1%)presented limited lens touch and two eyes(4.5%)showed retinal touch during surgery.Incision leakage was found in three eyes(6.8%)after surgery.There was no endophthalmitis,hemorrhage,or retinal detachment during the observation period and ophthalmic examinations after the implantation of vitreous substitutes.CONCLUSION:The modified technique of the standard vitrectomy applied in the endotamponade model in rabbits shows excellent safety and practicality.

A sutureless technique for securing leaking sclerotomies with viscoelastic substances in 23-gauge microincision vitrectomy surgery

AIM:To introduce and evaluate the clinical efficacy of a new technique,the use of viscoelastic substances(VS)to close leaking sclerotomy in 23G microincision vitrectomy,and to observe its effect on the visual acuity and intraocular pressure(IOP)of patients.METHODS:Patients who underwent 23G vitrectomy in Ningbo Eye Hospital before the use of VS technique(June 2019 to September 2020)and after the use of VS technique(October 2020 to December 2021)were selected as the subjects of this study.The above cases underwent operation by the same surgeon and were retrospectively analyzed.VS technique was used as the alternative to suturing,in which a small amount of VS was injected at the leaking sclerotomy and then gently massaged to confirm leaking sclerotomy closure.RESULTS:A total of 174 eyes were covered in the study,including 84 eyes in the control group(before the use of VS technique)and 90 eyes in the VS technique group.The number of eyes that needed to be sutured decreased considerably from 42.9%in the control group to 3.3%in the VS technique group,and the proportion of subconjunctival hemorrhage at 1-2d after surgery decreased remarkably from 35.7%in the control group to 2.2%in the VS technique group.No substantial differences in the incidence of mean IOP and low IOP were found between 1-2 and 3-20d after surgery in the VS technique group.No major complications associated with VS technique were identified during the study.CONCLUSION:In 23G microincision vitrectomy,VS technique is a safe,simple,and effective method to close leaking sclerotomy.

Surgical Approaches in Primary Rhegmatogenous Retinal Detachment: A Systematic Review and Meta-Analysis Comparing Vitrectomy vs. Vitrectomy Combined with Scleral Buckling, Lens-Sparing vs. Phako Procedures

Aim: This study aimed to assess and compare the functional and anatomical results of pars plana vitrectomy (PPV) alone versus PPV combined with scleral buckling (SB), and lens-sparing versus phaco-procedures for treating rhegmatogenous retinal detachment. Methods: A comprehensive literature search was performed using the Web of Science, MEDLINE, EMBASE, and Cochrane Library databases to retrieve comparative studies. The main objective was to assess the BCVA, while reattachment rates and ocular adverse events were considered secondary measures. Rev Manager software was used for statistical analysis. Results: The literature search identified 10 articles comprising 1518 eyes, with 682 eyes in the PPV group, 193 eyes in the lens-sparing versus phaco-procedure group, and 643 eyes in the combined PPV and SB surgery group. Quality assessment revealed a low risk of bias in most domains. The meta-analysis results revealed a significant difference in postoperative BCVA between the PPV and PPV combined with SB groups (WMD = −0.17, 95% CI [0.27, 0.07], p = 0.001). The primary reattachment rates were 82.80% for PPV alone and 87.52% for PPV combined with SB (p = 0.34). The final reattachment rates did not differ significantly between PPV and PPV combined with SB (99% vs. 99.8%;RR = 1.00, 95% CI [1.01, 0.99], p = 0.96). PPV alone demonstrated a significantly reduced risk of macular edema compared to PPV combined with scleral buckling (9.9% vs. 23%;p = 0.006). The incidences of macular hole development (p = 0.46), recurrent retinal detachment (p = 0.27), proliferative vitreoretinopathy development (p = 0.48), epiretinal membrane proliferation (p = 0.77), and limited choroidal hemorrhage (p = 0.69) were not significantly different between the two groups. Conclusions: These findings suggest that PPV alone may be a more effective treatment option in terms of visual acuity (VA) improvement, lower risk of macular edema and cataract development. However, there was no significant difference in VA improvement or complication rates between the lens-sparing and phaco-procedure groups. .

Surgical cardiac synchronization therapy for the cardiomyopathy heart failure with micro-invasive thoracoscopy techniques

Objective The cardiac synchronization therapy (CRT) was proven to have good treatment for the cardiacconduction disorders patients with serious heart failure. But many disadvantages were gradually be noticed,such as difficulty of sinus electrode implantation,coronary sinus injury and bleeding,still one third

结膜无缝合玻璃体切割系统联合微切口白内障超声乳化在白内障合并增殖型糖尿病视网膜病变患者中的应用效果

目的探讨结膜无缝合玻璃体切割系统联合微切口白内障超声乳化在白内障合并增殖型糖尿病视网膜病变患者中的应用效果。方法选取2020年1月至2022年12月南昌大学第二附属医院收治的40例(80眼)白内障合并增殖型糖尿病视网膜病变患者作为研究对象,所有患者均为双眼病变,按照随机数字表法将其分为观察组(20例,40眼)与对照组(20例,40眼)。对照组采用常规玻璃体切割术与白内障超声乳化吸除术,观察组采用结膜无缝合玻璃体切割系统联合微切口白内障超声乳化吸除术。比较两组手术前,术后7 d,术后1、3个月视力水平、眼压水平及内皮细胞数目以及两组术后并发症发生情况。结果两组患者术后7 d,术后1、3个月视力水平高于手术前,差异有统计学意义(P<0.05);手术前、术后7 d、术后1个月,两组患者的视力水平比较,差异无统计学意义(P>0.05);术后3个月,观察组患者的视力水平高于对照组,差异有统计学意义(P<0.05)。术后7 d及术后1、3个月,两组患者的眼压水平低于手术前,差异有统计学意义(P<0.05);手术前,术后7 d,术后1、3个月,两组患者的眼压水平比较,差异无统计学意义(P>0.05)。术后7 d及术后1、3个月,两组患者的内皮细胞数目低于手术前,差异有统计学意义(P<0.05);术后1、3个月,两组患者的内皮细胞数目均高于术后7 d,差异有统计学意义(P<0.05);术后7 d及术后1、3个月,观察组患者的内皮细胞数高于对照组,差异有统计学意义(P<0.05)。观察组患者的并发症总发生率低于对照组,差异有统计学意义(P<0.05)。结论结膜无缝合玻璃体切割系统联合微切口白内障超声乳化治疗白内障合并增殖型糖尿病视网膜病变效果显著,可改善患者视力水平,不增加患者术后眼压,且可减少术后内皮细胞的丢失,术后并发症发生率较低。

“肝脾同调-血水同治”对增殖性糖尿病性视网膜病变PPV围手术期的影响

目的探究“肝脾同调-血水同治”对增殖性糖尿病性视网膜病变(proliferative diabetic retinopathy,PDR)玻璃体切除术(pars plana vitrectomy,PPV)患者围手术期的影响。方法选取2021年6月—2023年6月本院收治的63例PDR患者,按照简单随机法分为常规组(n=31)和同调组(n=32),常规组给予常规围术期治疗(术前3~5 d至术后7 d),同调组在常规组基础上实施“肝脾同调-血水同治”治法,比较2组临床指标、并发症(高眼压、玻璃体积血、视力下降)、眼压、炎症反应分级(前房闪辉、前房炎症细胞、纤维蛋白渗出),干预前后炎症因子水平[前房液白细胞介素-6(Interleukin-6,IL-6)、血清C反应蛋白(C-reactive protein,CRP)]。结果同调组手术时间、住院时间低于常规组(P<0.05);2组并发症总发生率比较无统计学意义(P>0.05);术后1 d、3 d,2组眼压均随时间延长而下降(P<0.05),且术后1 d同调组低于常规组(P<0.05);术后1 d、1周,2组前房闪辉、前房炎症细胞和纤维蛋白渗出评级随时间延长明显减轻(P<0.05),且术后1 d同调组前房闪辉评级明显低于常规组(P<0.05);术后1 d、1周,2组前房液IL-6、血清CRP均随时间延长而降低(P<0.05),且同调组均低于常规组(P<0.05)。结论“肝脾同调-血水同治”应用于PPV治疗的PDR患者,可减少患者围术期并发症,有效控制炎症反应,缩短手术时间和住院时长,具有临床应用价值。

开放性眼外伤玻璃体切割手术预后及影响因素

目的探讨开放性眼外伤行玻璃体切割手术(PPV)治疗的预后情况,并对其相关影响因素进行分析。方法回顾性研究2013-01至2022-12在武警四川总队医院、乐山市眼科中心、成都中医药大学附属眼科医院行PPV治疗的开放性眼外伤患者241例(241眼)的临床资料。记录术前临床特征,包括性别、年龄、外伤类型、外伤分区、眼内异物、视力、眼压、相对性传入性瞳孔障碍、受伤至PPV时间(受伤~手术时间)、感染性眼内炎和组织受累情况。根据患者情况制定相应的PPV方案,术后随访6个月,每次随访记录视力、眼压、屈光介质情况,视网膜复位情况,眼球保留和摘除情况。根据末次随访结果评判手术预后情况。采用多因素回归分析术前临床特征与手术预后的相关性。结果241眼中,解剖痊愈113眼(46.9%),功能痊愈93眼(38.6%),总治愈206眼(85.5%),未愈35眼(14.5%),眼球摘除17眼(7.1%)。多因素回归分析显示总治愈率与外伤类型、外伤分区、受伤~手术时间相关,眼球摘除率与外伤类型、术前视力、受伤~手术时间相关。结论PPV治疗开放性眼外伤疗效显著,外伤类型、外伤分区、术前视力和受伤~手术时间是影响手术预后的相关因素。

高度近视黄斑裂孔性视网膜脱离行玻璃体切割术后C_(3)F_(8)与硅油填充的疗效比较

目的:比较高度近视黄斑裂孔性视网膜脱离(MHRD)行玻璃体切割联合内界膜剥离后玻璃体腔内分别行硅油或C_(3)F_(8)填充治疗的疗效观察。方法:回顾性临床研究。2019-01/2022-08就诊于我院的45例45眼高度近视MHRD患者,根据手术方式分为硅油组(23例)及C_(3)F_(8)组(22例),两组患者均常规三切口玻璃体切割手术,内界膜剥离后行内界膜填塞、自体血覆盖,硅油填充组行硅油填充,C_(3)F_(8)组行15%C_(3)F_(8)气体填充。两组患者分别观察最佳矫正视力(BCVA)、多焦视网膜电图(mfERG)、裂孔的闭合及视网膜复位情况,统计两组患者术后并发症情况。结果:C_(3)F_(8)组、硅油组患者裂孔闭合率为77%、83%(P>0.05),视网膜复位率分别为95%、96%(P>0.05)。C_(3)F_(8)组、硅油组术后视力分别为0.99±0.34、1.22±0.37,C_(3)F_(8)组视力优于硅油组(t=-2.156,P=0.037),两组均较术前显著提高。术后12 mo,两组患者mfERG一阶函数1环(C_(3)F_(8)组114.27±26.37 nV/deg2,硅油组98.08±24.36 nV/deg2)及2环(C_(3)F_(8)组80.45±14.94 nV/deg2,硅油组67.73±15.33 nV/deg2)P1波反应密度较术前(1环P1波反应密度:C_(3)F_(8)组58.13±13.96 nV/deg2、硅油组55.30±10.48 nV/deg2;2环P1波反应密度:C_(3)F_(8)组51.18±8.19 nV/deg2、硅油组47.43±11.97 nV/deg2)明显增加(均P<0.05),C_(3)F_(8)组较硅油组增加明显(P<0.05)。硅油组与C_(3)F_(8)组患者术后并发症发生情况无差异(P>0.05)。结论:玻璃体切割联合内界膜剥离后玻璃体腔内分别行硅油或C_(3)F_(8)填充均可促进高度近视MHRD患者视网膜复位及黄斑裂孔闭合,而且在视功能恢复C_(3)F_(8)填充优于硅油填充。

改良巩膜扣带手术与玻璃体切割术在孔源性视网膜脱离治疗中的效果比较

目的比较改良巩膜扣带手术(RSB)与玻璃体切割术(PPV)在孔源性视网膜脱离治疗中的效果。方法回顾性分析,收集信阳职业技术学院附属医院在2020年6月至2022年6月收治的93例孔源性视网膜脱离患者的临床资料,根据手术方式将入选患者分为观察组(RSB治疗,47例)和对照组(PPV治疗,46例)。两组患者均完成6个月的随访,比较两组患者术后视网膜复位情况,术前、术后1周、术后3个月、术后6个月最佳矫正视力(BCVA)以及术后并发症发生情况。结果观察组初次手术视网膜复位成功率低于对照组,但差异无统计学意义(χ^(2)=0.156,P=0.693)。两组术前、术后6个月BCVA比较,差异无统计学意义(P>0.05);两组术后1周、术后3个月、术后6个月BCVA均较术前逐渐降低,且观察组术后1周、术后3个月BCVA比对照组低,组间、时点、组间时点交互作用有统计学意义(P<0.05)。观察组并发症总发生率较对照组低,差异有统计学意义(P<0.05)。结论RSB与PPV均可有效复位孔源性视网膜脱离患者的视网膜,促进患者视力改善。但与PPV相比,孔源性视网膜脱离患者RSB术后早期视力恢复较快,术后并发症发生率较低。

增生型糖尿病视网膜病变患者术后玻璃体再积血风险的列线图模型构建

目的 探讨增生型糖尿病视网膜病变(PDR)患者术后玻璃体再积血风险的影响因素,构建其风险预测的列线图模型。方法 回顾性收集2020年1月至2023年6月因增殖性糖尿病视网膜病变行玻璃体切割术(PPV)或抗血管内皮生长因子(VEGF)联合全视网膜激光光凝治疗术后,随访再发玻璃体积血患者182例182眼的临床资料,将再积血患者纳入研究组,未发生患者纳入对照组,比较2组资料并分析再积血发生可能的影响因素,将分析得到的风险因素纳入构建列线图模型。结果 182例PDR患者术后并发玻璃体再积血共31例,发生率为17.03%;未并发玻璃体再积血151例,占82.97%。单因素分析发现,研究组合并慢性肾脏病(CKD)、视盘新生血管(NVD)比例高于对照组,术前糖化血红蛋白(HbA1c)水平高于对照组,差异有统计学意义(P<0.05);2组间其他基线资料比较,差异无统计学意义(P>0.05)。多因素Logistic分析显示,合并CKD、NVD、术前HbA1c高均可能是PDR患者术后玻璃体再积血的危险因素(OR>1,P<0.05)。基于多因素Logistic回归分析结果,构建相关风险预测列线图模型,采用Bootstrap自抽样法和C-index对上述模型进行内部验证(C-index=0.958),列线图的精确度和区分度良好,校准曲线与理想曲线贴合良好。结论 PDR患者PPV或抗VEGF联合全视网膜激光光凝治疗术后玻璃体再积血的危险因素可能为合并CKD、NVD、术前HbA1c高,据此建立的列线图模型对PDR患者术后玻璃体再积血发生风险的预测效能良好。

视网膜内层结构对PDR患者玻璃体切割术后视力预后的影响

目的研究视网膜内层结构对增生性糖尿病视网膜病变(PDR)患者玻璃体切割术(PPV)后视力预后的影响。方法回顾性选取2021年1月至2023年1月在秦皇岛市第一医院确诊PDR并行玻璃体切割术治疗的118例(135眼)患者作为研究对象。术后随访6个月,根据视力变化情况,分为预后良好组(n=98,109眼)和预后不良组(n=20,26眼)。比较术后1个月不同预后患者的视网膜内层厚度、视网膜内层不连续(DRIL)长度和中央黄斑厚度(CMT);采用Spearman相关性分析探究视网膜内层厚度、DRIL长度和CMT与PDR患者PPV后预后不良之间的关系;采用受试者操作特征(ROC)曲线评估视网膜内层厚度、DRIL长度和CMT对PDR患者PPV后预后不良的预测价值。结果术后1个月,预后良好组患者视网膜内层厚度、DRIL长度和CMT厚度分别为(185.93±19.68)、(565.42±53.12)、(327.31±23.51)μm,均显著小于预后不良组[(132.25±11.59)、(235.17±40.18)、(225.52±18.33)μm],差异均有统计学意义(P<0.05)。Spearman相关性分析显示,视网膜结构中的视网膜内层厚度、DRIL长度和CMT厚度与PDR患者PPV后视力预后不良均呈正相关(r=0.679、0.683、0.624,P<0.05)。ROC曲线分析显示,曲线下面积(AUC)值分别为0.837、0.791及0.760;视网膜内层厚度、DRIL长度和CMT厚度对PDR患者PPV后视力预后具有一定预测价值(P<0.05)。结论术后1个月,视网膜内层厚度、DRIL长度和CMT厚度增加与PDR患者玻璃体切割术后视力预后不良有关,并对其有一定的预测价值。

大量出血型息肉状脉络膜血管病变行重水辅助下玻璃体切除联合巩膜外引流术的疗效

目的:探讨息肉状脉络膜血管病变(PCV)引起黄斑下大量出血行重水辅助下玻璃体切除联合巩膜外引流术的临床疗效。方法:回顾性分析2017年1月至2022年1月在浙江省人民医院行玻璃体切除术的出血型PCV患者56例(56眼)。根据是否联合重水辅助下的巩膜外引流手术,将其分为单纯玻切组(28眼)与联合治疗组(28眼)。观察两组治疗前后的最佳矫正视力、黄斑中心凹视网膜厚度(CMT)、息肉样血管病灶消退情况,同时记录治疗期间两组并发症情况。结果:联合治疗组在治疗后第1个月、第3个月、第6个月和第12个月时的视力较基线均有所提高(均P<0.05);而单纯玻切组在第1个月和第3个月的视力较基线下降(P<0.05),直至6个月和12个月才显著上升(P<0.05);联合治疗组在治疗后第1个月、第3个月、第6个月和第12个月时的视力均优于单纯玻切组(均P<0.05)。联合治疗组和单纯玻切组在治疗后第1个月、3个月、6个月和12个月的CMT较基线均显著下降(均P<0.05);在治疗后第1个月、第3个月、第6个月和第12个月,联合治疗组的CMT均低于单纯玻切组(均为P<0.05)。治疗后6个月时,联合治疗组4例患者息肉样血管病灶基本消退,单纯玻切组1例息肉样血管病灶基本消退,两组间比较差异无统计学意义(P=0.349)。治疗后第12个月时,联合治疗组8例患者息肉样血管病灶完全消退,单纯玻切组4例息肉样血管病灶消退,两组间比较差异无统计学意义(P=0.193)。治疗期间联合治疗组未出现明显并发症;单纯玻切组有10例出现并发症,治疗后得以控制。结论:重水辅助下玻璃体切除联合巩膜外引流手术相对单纯玻璃体切除术能更有效地改善患者视力,更显著地降低出血型PCV患者的CMT,出血引流更为彻底,术后黄斑下积血更少,术后并发症更少。

微创玻璃体切除术后干眼发生的相关因素及治疗进展

玻璃体切除术的问世解决了眼科界难以攻克且难治性眼底病的治疗,微创玻璃体切除术(MIV)是治疗眼底疾病的主要手术方式。临床中,患者在接受微创玻璃体切除术后出现干眼症状,包括流泪、异物感和视觉障碍等。我们推测微创玻璃体切除术可能会损伤结膜及角膜上皮以及相关感觉神经,以及破坏泪膜而引起局部炎症反应,从而影响眼表微环境,诱发或加重干眼症状。目前,对于微创玻璃体切除术后眼表变化的相关研究较少。本文旨在分析微创玻璃体切除术术前、术中、术后不同因素对于眼表微环境的影响,并针对不同情况提供可采取的防治措施,以便于指导临床做好术前准备,选择合适的手术方式以及减少术后罹患干眼风险。