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.

Ahmed valve implantation for neovascular glaucoma after 23-gauge vitrectomy in eyes with proliferative diabetic retinopathy

·AIM: To report on the outcome of Ahmed glaucoma valve (AGV) implantation for the management of neovascular glaucoma (NVG) after 23 -gauge vitrectomy for proliferative diabetic retinopathy (PDR). ·METHODS: Twelve medically uncontrolled NVG with earlier 23 -gauge vitrectomy for PDR underwent AGV implantation. The control of intraocular pressure (IOP), preoperative and postoperative best -corrected visual acuity, the development of intraoperative and postoperative complications were evaluated during the follow-up. ·RESULTS: The mean follow-up was 15.4±4.3 months (9-23 months). Mean preoperative IOP was 49.4±5.1mmHg and mean postoperative IOP at the last visit was 17.5 ± 1.6mmHg. The control of IOP was achieved at the final follow -up visits in all patients, however, 8 of 12 patients still needed anti-glaucoma medication (mean number of medications, 0.8±0.7). The visual acuity improved in nine eyes, and the visual acuity unchanged in three eyes at the final follow -up visits. The complications that occurred were minor hyphema in three eyes, choroid detachment in two eyes, and the minor hyphema and choroid detachments were reabsorbed without any surgical intervention. ·CONCLUSION: AGV implantation is a safe and effective procedure that enables successful IOP control and vision preservation in the NVG patients with the history of earlier 23-gauge vitrectomy for PDR.·

Combined 23-gauge sutureless vitrectomy and clear corneal phacoemulsification for rhegmatogenous retinal detachment repair

AIM: To assess the outcomes of combined 23-gauge sutureless vitrectomy and clear corneal phacoemulsification with intraocular lens implantation for rhegmatogenous retinal detachment(RRD) repair.METHODS: This was a retrospective, consecutive,noncomparative, interventional case series of 30 eyes of30 patients who underwent combined sutureless vitrectomy and clear corneal cataract surgery for the repair of RRD. The principal outcome measures were primary anatomical success rate, reasons for redetachment, final visual acuity, and surgical complications.RESULTS: Primary reattachment was achieved in 27eyes(90.0%). The reasons for redetachment(3 eyes, 10%)were incomplete laser retinopexy, persistent chronic subretinal fluid, and proliferative vitreoretinopathy,respectively. The logarithm of the minimum angle of resolution visual acuity(mean±SD) improved from 0.76±0.74 preoperatively to 0. 21 ± 0. 37 6 months’ postoperatively(P 【0.0001). Postoperative hypotony was not detected,but 1 eye( 3. 3 %) had increased intraocular pressure(30 mm Hg) with spontaneous resolution. No endophthalmitis developed during follow-up. Macular pucker was detected in 3 eyes(10.0%).· CONCLUSION: Combined 23-gauge sutureless vitrectomy and clear corneal phacoemulsification with intraocular lens implantation for RRD repair was proven safe and effective. It may provide not only the known advantages of conventional combined surgery, but also additional advantages such as less conjunctival fibrosis and the maintenance of stable intraocular pressure with low risks of postoperative hypotony and intraocular pressure elevation.

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.

Primary 23-gauge vitreoretinal surgery for rhegmatogenous retinal detachment

AIM: To report the effectiveness and safety of primary 23-Gauge (G) vitreoretinal surgery for rhegmatogenous retinal detachment (RRD). · METHODS: In this retrospective study, 49 eyes of 49 consecutive patients who underwent primary 23-G transconjunctival sutureless vitrectomy (TSV) for RRD between January 2007 and July 2009 at our institution were evaluated. · RESULTS: Mean follow-up time was 8.9±7.7 months (1-28 months). Retinal reattachment was achieved with a single operation in 47(95.9%) of 49 eyes. In two eyes (4.1%), retinal redetachment due to new breaks was successfully treated with reoperation using the 23-G TSV system. Mean logMAR visual acuity was 2.01±0.47 preoperatively and 1.3±0.5 postoperatively (P <0.001, Paired t -test). Mean preoperative intraocular pressure (IOP) was 14.1±2.8mmHg. Mean postoperative IOP was 12.3±3.6mmHg at 1 day, 13.1±2.1mmHg at 1 week, 14.3±2.2mmHg at 1 month. Iatrogenic peripheral retinal break was observed in 1 eye(2.0%) intraoperatively. No sutures were required to close the scleral or conjunctival openings, and no eyes required convertion of surgery to 20-G vitrectomy. · CONCLUSION: Primary 23-G TSV system was observed to be effective and safe in the treatment of RRD.

23-Gauge Pars Plana Vitrectomy Alone by a Bimanual Technique for the Removal of Dense Posteriorly Dislocated Crystalline Lens

Background: We sought to verify the efficacy and safety of transconjunctival 23-gauge pars plana vitrectomy (PPV) alone by our bimanual technique for the removal of dense posteriorly dislocated crystalline lens. Methods: A retrospective, noncomparative, interventional study of 31 consecutive cases of patients who underwent 23-gauge PPV alone for the removal of dense posteriorly dislocated crystalline lens following complicated cataract surgeries using our bimanual technique was conducted. The main outcomes measured included best-corrected visual acuity (BCVA), preoperative intraocular pressure (IOP), postoperative IOP and postoperative complications. Results: In all 31 cases included in this study, those dense posteriorly dislocated crystalline lenses were successfully removed. The enrolled patients consisted of 17 males and 14 females with a mean age of (75.84 ± 6.17) years (range 59 - 90). The mean follow-up length was (7.61 ± 1.87) months with a range of 6 months to 1 year. The mean preoperative BCVA was 0.22 ± 0.11 logMAR system, and the postoperative BCVA was 0.33 ± 0.07 logMAR system after 6 months of follow-up. The mean operative time was 46.32 ± 4.80 minutes with a range of 38.00 to 57.00 minutes. All of the conjunctival incisions self-closed within the first week with no wound leakage or hemorrhage. The postoperative complications were relatively rare. Conclusions: The removal of dense posteriorly dislocated crystalline lens might be a challenge for micro-incision vitrectomy. Our bimanual technique was proved to be an effective and safe method for those particular dense lenses using 23-gauge alone.

25-gauge transconjunctival diagnostic vitrectomy in suspected cases of intraocular lymphoma: a case series and review of the literature

AIM:To report the cytology results of 25-gauge transconjunctival(25G-TSV)diagnostic vitrectomy in cases suspicious for intraocular lymphoma(IOL),and compare the results to those reported in the literature.METHODS:Clinical and cytopathological records of 18vitreous biopsy specimens obtained via 25G-TSV diagnostic vitrectomy in 12 patients suspicious for IOL were reviewed retrospectively.A review of the literature in regards to the diagnostic yields of vitreous specimens obtained via 25-gauge and 20-gauge diagnostic vitrectomy in suspected cases of IOL was performed.RESULTS:Eighteen eyes from 12 patients with clinical suspicion of IOL underwent diagnostic 25G-TSV.The cytopathological investigations demonstrated IOL in 15eyes(83.3%).Vitreous analysis was non-diagnostic in 3eyes(16.7%).CONCLUSION:Twenty-five-gauge diagnostic vitrectomy yields adequate sample for cytological evaluation of the vitreous in cases suspicious for IOL.The diagnostic results of the 25G-TSV in the current study are superior to those reported for 20-gauge vitrectomy but equivalent to those reported for 25G-TSV in the published literature.

Outcomes of transconjunctival sutureless 27-gauge vitrectomy for vitreoretinal diseases

AIM： To evaluate the safety and efficacy profile of 27-gauge （27G） pars plana vRrectomy （PPV） for the treatment of various vitreoretinal diseases. METHODS： The clinical outcomes of 61 eyes （58 patients） with various vitreoretinal diseases following 27G PPV were retrospectively reviewed. RESULTS： Surgical indications included rhegmatogenous retinal detachment （n=24）, full-thickness macular hole （n=12）, diabetic retinopathy （n=11）, vitreous hemorrhage （n=6）, Eales disease （n=4）, pathological myopia-related vitreous floater （n=2）, and macular epiretinal membrane （n=2）. The mean follow-up was 166.4±61.3d （range 98-339d）. The mean IogMAR best-corrected visual acuity （BCVA） improved from 1.7±1.1 [0.02 decimal visual acuity （VA） equivalent] preoperatively to 1.2±1.0 （0.06 decimal VA equivalent） at the last postoperative visit （P〈0.001）. The mean operative time was 49.gmin. With the exception of complicated cataract in one eye, no intraoperative complications were encountered. No case required conversion to conventional 20-, 23- or 25G instrumentation in all surgical maneuvers except for silicone oil infusion, which required a 25G oil injection syringe. Postoperative complications included transient ocular hypertension, vitreous hemorrhage, persistent intraocular pressure elevation, subconjunctival oil leakage, and recurrent retinal detachment. No cases of hypotony, endophthalmitis, and sclerotomy-related tears were observed. CONCLUSION： The current results suggest that 27G PPV system is a safe and effective treatment for various vitreoretinal diseases. When learning to perform 27G PPV,surgeons may encounter a learning curve and should gradually expand surgical indications from easy to pathologically complicated cases.

Corneal topographic changes and surgically induced astigmatism following combined phacoemulsification and 25-gauge vitrectomy

AIM： To evaluate corneal topographic changes and surgically induced astigmatism （SIA） after combined phacoemulsification and 25-gauge transconjunctival sutureless vitrectomy （25-G TSV）.METHODS： A retrospective study on 96 eyes of 87 patients who underwent combined phacoemulsification and 25-G TSV. The different topographic parameters and SIA were analyzed pre- and postoperatively.RESULTS： There was no significant changes in corneal topographic parameters at different follow up periods. Only surface regularity index changed significantly in the 2nd postoperative week and then returned to baseline values thereafter. Mean SIA gradually decreased to reach 0.12 D by the 6th postoperative month.CONCLUSION： Corneal surface and astigmatic changes are insignificant in either early or late postoperative periods following combined phacoemulsification and 25-G TSV. The SIA was the minimum among previous reports on sutureless vitrectomy alone or combined with phacoemulsification. Improvement of SIA did not stop at the 3rd postoperative month but it continued till the 6th month postoperatively.

Outcomes of transconjuctival sutureless 27-gauge vitrectomy for stage 4 retinopathy of prematurity

AIM To report our initial experience with lens-sparing vitrectomy for stage 4 retinopathy of prematurity using the 27-gauge(G) system.METHODS This retrospective case series involved nine eyes of five babies with active stage 4 ROP, who underwent 27-G lens-sparing vitrectomy. Surgery was done using 27-G valved cannulas and sclerotomies were made 1.5 mm from the limbus. Bilateral sequential vitrectomy was done in eight eyes. RESULTS At one-year follow-up, anatomical outcome was favourable in all nine(100%) eyes. High-speed cutting and smaller sclerotomies were helpful in reducing the intra and post-operative complications. CONCLUSION27-G vitrectomy is well suited for stage 4 ROP surgeries.

Clinical presentation of a mixed 23-gauge infusion and 20-gauge pars plana technique for active silicone oil removal

AIM: To present with a clinical case series of a mixed 23-gauge infusion and 20-gauge pars plena technique for 5,700-centipoise silicone oil removal (SOR), and to discuss its efficacy and safety. METHODS: This is a retrospective, non-randomized controlled study. We performed SOR with 23-gauge infusion and 20-gauge active suction technique on 29 patients 29 eyes from April to October, 2011 (mixed group). During the surgeries, a 23-gauge sclerotomy was made for infusion and a 20-gauge sclerotomy was used for active silicone oil suction. Anterior segment optical coherence tomography (OCT) was applied for 23-gauge sclerotomy analysis 1 day post-operation. Traditional 20-gauge SOR was performed on another consecutive 29 patients 29 eyes, the control group (20G group). RESULTS: There were 2 eyes (6.9%) in mixed group and 5 eyes (17.2%) in 20G group which had recurrent retinal detachment after surgery. Hopytony (IOP <= 6mmHg) occurred in 8 eyes (27.6%) of mixed group and in 10 eyes (34.5%) of 20G group post-operation, but all of them recovered to the normal level finally. There were no statistical significant differences. Final visual acuity was significantly increased after surgery in both groups. Anterior segment OCT images were acquired from 13 eyes of mixed group, and all of them had a proper wound apposition. But local ciliary detachment was found in 9 eyes (69%). It was hard to define the OCT image of the sclerotomies and ciliary body because of the serious conjunctival hemorrhages and chemosis in 20G group. CONCLUSION: This mixed technique is a convenient and effective way to remove high viscosity silicone oil. Compared with traditional 20-gauge SOR, it does not increase the risk of post-operative complications and has less conjunctival reactions.. Transient postoperative hypotony is common for this procedure and subclinical ciliochoroidal detachment is a probable cause.

A modified approach to actively remove high viscosity silicone oil through 23-gauge cannula

AIM：To report a simple approach to actively remove high viscosity silicone oil through a 23-gauge cannula via pars plana.METHODS：Forty-eight eyes of 48 patients underwent silicone oil（5700 centistokes） removal（SOR） were enrolled.A section of blood transfusion set was prepared to connect a standard 23-gauge cannula and vitrectomy machine.Silicone oil was removed with suction of500-mm Hg vacuum through the cannula.Main outcome measures were SOR duration,number of sutured sites,intraocular pressure（IOP）,best-corrected visual acuity（BCVA）,and complications.RESULTS：Silicone oil was successfully removed in all cases.The mean SOR time was 5.70±0.85 min.Nine eyes（18.75%） needed suture partial sclerotomies.No intraoperative complications were noted.Transient hypotony（≤8 mm Hg） was seen in 3 eyes（6.25%） on postoperative day 1,but all resolved within 1wk.Retinal reattachment was achieved in all cases and no other postoperative complications were noted during 3-month following-up.BCVA at the final visit improved or stabilized in all patients comparing to the preoperative level.CONCLUSION：Active removal of high viscosity silicone oil through a 23-gauge instrument cannula jointed with blood transfusion set is a practical and reliable technique when considering two sides of efficacy and safety.

Removal of intraocular foreign body in anterior chamber angle with prism contact lens and 23-gauge foreign body forceps

AIM：To introduce a novel approach in removal of anterior chamber angle foreign body（ACFB） using a prism contact lens and 23-gauge foreign body forceps.METHODS：Data of 42 eyes of 42 patients who had undergone removal of ACFB using a prism contact lens and 23-gauge foreign body forceps from January 2008 to October 2013 were collected and analyzed. Twenty eyes in group A received the conventional approach by using toothed forceps through corneal limbus incision, and 22 eyes in group B underwent the novel method through the opposite corneal limbus incision. RESULTS：The success rate of ACFB once removal was 75%（15/20） in group A, and 100%（22/22） in group B. The average operation time of group A was significantly longer compared with group B（34.9±9.88 min vs 22.13±8.85min; P〈0.05）. The average size of corneal limbus incision in group A was significantly larger than that of group B（4.85±1.89 mm vs 3.95±1.17 mm; P〈0.05）. The corneal limbus incision suturing were conducted in all eyes in group A, and only 5 eyes in group B. CONCLUSION：Removal of ACFB using a prism contact lens and 23-gauge foreign body forceps is a safer, more effective, and convenient technique compared with the conventional approach.

International multi-center study of iatrogenic retinal tears in pars plana vitrectomy

AIM: To study and compare the effect of different surgical settings on the development of iatrogenic retinal tears(IRT) in conventional(20-gauge) and microincisional vitrectomy.METHODS: An international retrospective comparative study of 394 patients who had simple vitrectomy at three tertiary centers. Surgeries were performed by four retina surgeons using different viewing systems. Two groups of eyes were compared: microincisional vitrectomy(327 eyes) and conventional(67 eyes) vitrectomy. An iatrogenic tear was defined as the occurrence of one or more peripheral retinal tears during surgery or at any visit in the first 6 wk postoperatively.RESULTS: Mean age was 67±12 y and 55% were female. Iatrogenic tears occurred in 11/394(2.8%) of eyes. The rate of tears was similar among different surgeons and viewing systems(P=0.93 and P=0.76, respectively). Surgical indication, preexisting pseudophakia/aphakia, induction of posterior vitreous detachment(PVD) during surgery, and the use triamcinolone acetonide didn’t significantly affect the rate of tears(P>0.1 for all factors). A higher rate of tears was found in the conventional group compared to the microincisional group(respectively, 7.5%, 1.8%, P=0.02).CONCLUSION: The rate of IRT in vitrectomy is not significantly affected by surgical indication, preexisting PVD or pseudophakia, or use of triamcinolone or different viewing systems but is significantly higher in conventional vitrectomy. Microincisional platforms improve the safety of vitrectomy regardless of the viewing system used.

Resight非接触广角镜联合23G玻璃体切割系统治疗眼内炎的临床分析

目的评估Resight非接触广角镜联合23G玻璃体切割系统治疗感染性眼内炎的临床疗效及安全性。方法回顾性分析确诊为感染性眼内炎,通过Resight非接触广角镜联合23G玻璃体切割系统手术治疗的患者21例(21眼)。术后跟踪随访3~12个月,记录相关检查并对结果进行统计学分析。结果跟踪随访3~12个月,21例21眼的眼内感染经过治疗均得到控制。治疗前BCVA均未超过0.3,治疗后有5例BCVA超过0.3,9例BCVA0.05~0.3。2例患者经过治疗后的BCVA仍为光感。结论Resight非接触广角镜联合23G玻璃体切割系统治疗眼内炎可明显提高患者的最近矫正视力,术后并发症少,是临床上可选择的安全有效的方法。

23-G与20-G玻璃体切割术对视网膜脱离的临床疗效分析

目的分析23-G与20-G玻璃体切割术对视网膜脱离的临床疗效。方法 115例视网膜脱离患者分别接受23-G微创玻璃体切割术(A组,52例52眼)和20-G玻璃体切割术(B组,63例63眼)。记录手术时间和术中并发症的发生情况,术后随访6～15个月,观察术后视网膜复位、视力(logMAR视力)及并发症的发生等情况,对相关记录指标进行统计学分析比较。结果 A组和B组的手术时间分别为(67±18)min和(70±19)min,组间比较差异无统计学意义(P>0.05);术中主要并发症为医源性裂孔,A组为2眼,B组为3眼。术后末次随访结果显示:A组视网膜复位49眼(复位率94.2%),logMAR视力提高0.337±0.046;B组视网膜复位59眼(复位率93.7%),logMAR视力提高0.367±0.052;两组间视网膜复位率和视力提高幅度比较,差异均无统计学意义(P>0.05)。结论 23-G与20-G玻璃体切割术对视网膜脱离的临床疗效相近,23-G微创玻璃体切割术适用于各种视网膜脱离患者的治疗。

改良两切口23G经结膜免缝合玻璃体切割系统硅油取出术的观察

目的：评价一次性输血器和自制抽吸头用于23G经结膜免缝合玻璃体切割系统硅油取出术的有效性和安全性。方法：将23G灌注管在距离末端5mm处剪断,制成抽吸头,用于连接一次性输血器和23G穿刺套管。将输血器的莫菲氏管及以上部分剪除,连接玻璃体切割器的积液盒,利用玻璃体切割器的吸引系统通过睫状体平坦部的两切口主动抽吸清除眼内硅油。结果：患者132例手术中仅有13例（9.8%）需要缝合穿刺口,手术时间为7-28（平均15.1±6.2）min。术后早期107例（81.1%）患者眼压低于11mmHg,并有2例出现周边脉络膜隆起,术后1wk眼压基本恢复正常,但有2例（1.5%）高度近视合并黄斑裂孔性视网膜脱离患者出现视网膜再脱离。大部分患者硅油清除干净,仅有4例（3.0%）有少许硅油残留。结论：利用一次性输血器和自制抽吸头连接玻璃体切割器的吸引系统行两切口23G经结膜免缝合硅油取出术具有安全、有效、快捷、经济等优点,值得推广应用。

23 G微创玻璃体手术联合吊顶灯照明系统治疗复杂性外伤性视网膜脱离

目的观察23 G玻璃体切割手术联合吊顶灯治疗复杂性外伤性视网膜脱离的临床疗效及并发症情况。方法回顾性分析2012年6月至2013年12月在我院眼科中心住院的50例（50眼）复杂性外伤性视网膜脱离患者,行吊顶灯辅助下23 G玻璃体切割手术,随访2~6个月,平均3.6个月,观察所有患者术前和术后不同时间点最佳矫正视力、眼压变化情况,分析术中、术后并发症,分析视网膜解剖复位率等情况。结果术中无医源性裂孔、出血等并发症发生,术后无脉络膜脱离、眼内炎等并发症发生。10眼（20.0%）出现术后高眼压,经治疗后均恢复正常。术毕拔除套管后巩膜切口渗漏需缝合者15眼（30.0%）。最终视网膜全部复位。术后1周及1个月、3个月测得的平均眼压与术前相比差异均无统计学意义（均为P〉0.05）。术后1个月、3个月最佳矫正视力均较术前提高,差异均有统计学意义（均为P〈0.05）。结论 23 G玻璃体切割术具有微创、手术时间短等优点,联合吊顶灯治疗复杂性外伤性视网膜脱离是一种安全有效的手术方法。

23G TVS在治疗玻璃体视网膜疾病中的应用

目的探讨23G经结膜无缝合玻璃体切割系统(23GTVS)在玻璃体视网膜疾病中的应用,评估其疗效及安全性。方法回顾性分析2008年8月至2009年9月在我院行23G玻璃体切割术的患者42例(43眼)。其中,特发性黄斑裂孔16眼(37.2%),特发性黄斑前膜8眼(18.6%),玻璃体积血19眼(44.2%)。观察手术效果及时间、最佳矫正视力、眼压及术中、术后并发症等。术后随访1～10个月。结果所有病例均顺利完成手术,术后最佳矫正视力均有提高,术后1周矫正视力平均为0.88±0.54,末次随访为0.46±0.24,与术前比较差异均有显著统计学意义(均为P<0.01)。术后1周平均眼压为(14.0±4.5)mmHg(1kPa=7.5mmHg),接近术前水平。术中2眼套管滑脱,6眼结膜下轻微出血,3眼结膜下气泡;所有病例在随访期间无严重并发症发生。结论 23GTVS目前主要应用于黄斑疾病和玻璃体积血,术后恢复快,疗效好,并发症少,是一种安全有效的微创手术方法。

经结膜无缝合23G玻璃体切除术灌注系统在玻璃体切除术后白内障手术中的应用

回顾性分析30例(30只眼)均系玻璃体切除术后白内障的患者,经结膜无缝合23G玻璃体切除术(23G TSV)灌注系统的支持下行小切口非超声乳化白内障摘除术和白内障超声乳化术,观察视力预后、术中及术后并发症。1例患者在行超声乳化时,术中发现后囊膜破裂改行小切口手术。3例患者术后低眼压,其中1例发现是脉络膜脱离所致,另外2例考虑有切口的渗漏,经处理后恢复正常。4例硬核和3例合并糖尿病视网膜病变的患者术后出现角膜水肿和前房闪辉。所有患者没有出现巩膜塌陷、晶体核沉入玻璃体腔、脉络膜上腔出血等严重的并发症。28例患者术后视力得到改善。