Entry-site-related retinal detachment after pars plana vitrectomy

PURPOSE: Today, pars plana vitrectomy represents a standard surgical procedure for a number of retinal diseases that were previously considered inoperable. The aim of the present study is to investigate the entry site of pars plana vitrectomy as a possible source of retinal detachment. METHODS: We reviewed retrospectively all cases of uncomplicated pars plana vitectomies because of macular hole, macular pucker and diabetic macular oedema performed in our department between 1 January 2001 and 7 July 2004. RESULTS: Over 3.5 years, 244 pars plana vitrectomies because of macular disease were performed. Sclerotomy-related retinal detachment was observed in 11 (4.5%) cases. These retinal detachments occurred at a mean of 37 (2-100) days after surgery. They appeared within the first 4 weeks in 55% of the cases. CONCLUSION: Iatrogenic retinal breaks and detachment continue to be a severe complication of pars plana vitrectomy, despite improvements in instrumentation and surgical techniques. A 4.5% incidence of sclerotomy-related retinal detachment after simple vitrectomy calls for action. Current approaches to reduce this complication - such as circular peripheral cryoretinopexy, scleral buckling or 360 degrees laser treatment - are invasive. We recommend extended vitreous base cleaning with scleral indentation and examination of the entry sites, performed with a three-mirror lens or via careful indirect ophthalmoscopy into the periphery, 4 weeks after surgery.     

The risk of rhegmatogenous retinal detachment following anterior vitrectomy during cataract surgery: with versus without pars plana vitrectomy

Graefe's Archive for Clinical and Experimental Ophthalmology - To compare the rates of rhegmatogenous retinal detachment (RRD) following an anterior vitrectomy (AV) alone during cataract...     

Comparison of pars plana vitrectomy and scleral buckling for uncomplicated rhegmatogenous retinal detachment

Retinal detachment surgery can now achieve a final reattachment rate in over 90% of cases. The operation of choice in most cases is that of external scleral buckling with or without drainage of subretinal fluid. However, in a minority of cases these techniques are difficult to apply either when the breaks are unseen due to media opacities or when the breaks are complex, eg, posterior, large, or multiple breaks at different distances from the ora. Improvements in the technique of pars plana vitrectomy for retinal detachment now offers us an alternative method for treating these difficult cases. Pars plana vitrectomy for retinal detachments with unseen or complex breaks has a final attachment rate of over 90%, is technically easier to perform than conventional surgery, and avoids the refractive and ocular motility problems associated with complicated buckles. For these reasons and despite the high risk of nuclear sclerosis in phakic eyes, a pars plana vitrectomy may be the preferred option in selected cases of primary retinal detachment.     

Complicated retinal detachment and its management with pars plana vitrectomy.

Fifty patients with retinal detachment accompanied by vitreous haemorrhage, perforating eye injuries, intraocular foreign bodies, massive preretinal retraction,.giant tears greater than 180 degrees, and proliferative retinopathies underwent pars plana vitrectomy, cryocoagulation, scleral buckling, and intravitreal gas injection. Intraoperative complications included minimal to moderate bleeding and iatrogenic retinal tears, but no retinal dialysis was produced at the pars plana sclerotomy site. Postoperative complications included recurrent vitreous haemorrhage, rubeosis, haemolytic, erythroclastic, or neovascular glaucoma, transient increase of intraocular pressure, uveitis, and macular pucker. Phthisis bulbi occurred in 6 eyes; in 3 of these eyes enucleation was required. Successful reattachment was accomplished in 56% of these complicated retinal detachments, most of which had been considered inoperable by conventional techniques. Visual improvement was achieved in 46% of eyes. Follow-up ranged from 6 to 29 months.     

Primary repair of retinal detachment with 25-gauge pars plana vitrectomy

PURPOSE: To evaluate 25-gauge pars plana vitrectomy (PPV) for primary repair of rhegmatogenous retinal detachment (RRD). STUDY DESIGN AND PARTICIPANTS: This retrospective, consecutive case series included 42 eyes of 41 patients who underwent primary repair of RRD utilizing transconjunctival 25-gauge PPV without scleral buckling at the Cincinnati Eye Institute from July 2004 through January 2007. METHODS: The medical records were retrospectively reviewed, and the corresponding demographic data, preoperative ophthalmic diagnoses, surgical management, and postoperative course and treatment were recorded. Main outcome measures included single surgery anatomical success, preoperative and postoperative visual acuity, and complications. RESULTS: Most patients had pseudophakic RRD (36 [85.7%] of 42 eyes). The crystalline lens was present in the remaining 6 eyes (14.3%). Of 42 eyes, 28 (66.7%) had macula-on RRD, while 14 (33.3%) had macula-off RRD. Four surgeons contributed to this study, and 25-gauge PPV instrumentation, a wide-angle viewing system, endolaser photocoagulation, and gas tamponade were used in each case. The single surgery anatomical success rate was 92.9% (39 of 42 eyes). For eyes with macula-on RRD, best-corrected visual acuity was 20/50 (0.43 logMAR [logarithm of the minimum angle of resolution]) preoperatively and 20/30 (0.23 logMAR) postoperatively (P = 0.24). For eyes with macula-off RRD, best-corrected visual acuity was 5/200 (1.56 logMAR) preoperatively and 20/30 (0.23 logMAR) postoperatively (P = 0.001). Three eyes required additional surgery for final reattachment. Final reattachment was achieved in 100% of patients (mean follow-up, 8 months). CONCLUSIONS: Twenty-five-gauge PPV with laser retinopexy and gas tamponade is effective for primary repair of RRD. The single operation anatomical success rate is comparable with rates reported for primary vitrectomy with 20-gauge instrumentation, scleral buckling, and combined vitrectomy/scleral buckling.     

23G高速玻璃体切除手术治疗孔源性视网膜脱离的初步临床观察

目的:探讨23G高速玻璃体切除手术治疗孔源性视网膜脱离的临床效果。方法:前瞻性选择2009-03/2009-10一组合并较明显玻璃体混浊、玻璃体视网膜粘连牵拉或合并玻璃体积血的孔源性视网膜脱离病例共20例20眼,应用23G玻璃体切除手术联合膨胀气体全氟丙烷(C3F8)填充。统计分析视网膜解剖复位率、术后3mo时最佳矫正视力、术中、术后并发症、手术时间及术后眼部刺激征的严重程度,术后平均随访6mo。结果:所有20眼均一次手术后视网膜完全复位。未发生器械损伤晶状体或医源性视网膜裂孔等术中并发症。15眼黄斑已脱离眼的术前最佳矫正视力为0.02～0.5(log-MAR视力为0.3～2.0,平均1.187±0.616),术后3mo时最佳矫正视力为0.3～0.8(logMAR视力为0.1～0.52,平均0.276±0.114),差异具有统计学意义(t=5.756,P<0.01);5眼黄斑未脱离眼的术前最佳矫正视力为0.8～1.0(logMAR视力为0～0.52,平均0.218±0.276),术后3mo时最佳矫正视力为0.6～1.0(logMAR视力为0～0.52,平均0.312±0.285),差异没有统计学意义(t=-1.0,P=0.374)。手术后未发生低眼压、脉络膜脱离或眼内炎等切口相关并发症,无增生性玻璃体视网膜病变(PVR)发生。3眼术后第1d出现轻度晶状体后囊下羽毛状混浊,1wk内消退。至随访结束时,4眼(20%)晶状体核密度增加,其余病例无新生白内障或原白内障明显加重。5眼(25%)术后一过性眼压升高,眼压均<30mmHg,经局部使用1～2种降眼压滴眼液,3d内恢复正常,平均术后第7d眼压为14.6±3.4mmHg。结论:23G玻璃体切除手术治疗孔源性视网膜脱离安全有效,缝合手术切口可避免并发症,是值得推广的技术。     

Management of inferior retinal breaks during pars plana vitrectomy for retinal detachment

AIMS: To determine whether it is necessary to support inferior retinal breaks with a scleral explant during pars plana vitrectomy (PPV) for rhegmatogenous retinal detachment (RD). METHODS: A prospective study was carried out on nine eyes of nine consecutive patients undergoing PPV for primary RD with associated inferior retinal breaks and no significant proliferative vitreoretinopathy. RESULTS: Eight eyes were successfully reattached with a single operation. No cases presented with redetachment because of failed closure of the original inferior breaks. CONCLUSIONS: It is not necessary to support inferior retinal breaks with a scleral explant during PPV for primary RD repair in selected cases.     

Vitreoretinal fellow surgical outcome of small gauge pars plana vitrectomy for acute rhegmatogenous retinal detachment

Background  

Our purpose was to determine the anatomical outcome following small gauge vitrectomy for acute rhegmatogenous retinal detachment (RRD) operated by vitreoretinal fellows.     

Epiretinal membrane following pars plana vitrectomy for rhegmatogenous retinal detachment repair

AIM: To determine the rate and possible contributors for post-pars plana vitrectomy (PPV) epiretinal membrane (ERM) in patients treated for rhegmatogenous retinal detachment (RRD). METHODS: This prospective, nonrandomized study comprised 47 consecutive patients (47 eyes) with acute RRD treated with 23 G post-PPV. All participants were followed prospectively for 6mo for the development of ERM using spectral domain optical coherence tomography. Preoperative and intraoperative data were collected by questionnaires to surgeons. Main outcome measure was the percentage of the ERM formation following post-PPV for RRD. RESULTS: ERM developed postoperatively in 23 eyes (48.9%), none necessitated surgical removal. There was a statistically significant difference between patients with and without ERM postoperatively in preoperative best corrected visual acuity (median logMAR 1.9 vs 0.3, respectively; P=0.003) rate of macula-off (69.6% vs 37.5%, respectively, P=0.028), and rate of ≥5 cryo-applications (55.6% and 18.8%, respectively, P=0.039). ERM developed mainly between the 1st and 3rd months of follow-up. Macula-off status increased the risk of ERM, with the odds ratio of 3.81 (P=0.031). CONCLUSION: ERM is a frequent post RRD finding, and its development is associated with macula-off RRD.     

Injection of fluorosilicone oil and pars plana vitrectomy for complex retinal detachment

Pars plana vitrectomy can be combined with injection of fluorosilicone oil to treat complex retinal detachments. We describe three cases to illustrate the technique, which is adapted according to the type and location of the retinal breaks.     

曲安奈德染色玻璃体辅助玻璃体切割术治疗孔源性视网膜脱离

目的 探讨曲安奈德（TA）染色玻璃体辅助玻璃体切割术在治疗孔源性视网膜脱离中的应用价值。设计回顾性病例系列。研究对象北京英智眼科医院2006～2009年孔源性视网膜脱离经睫状体平坦部玻璃体切割术的患者425例（428眼）。方法比较TA辅助组（302例,304眼）与未进行TA辅助的对照组（123例,124眼）两组间术前术后的视力及并发症差异（X^2检验）。TA组及对照组平均随访分别为（18．3±6.3）、（21．3±4．2）个月。主要指标最佳矫正视力,术后并发症。结果TA组术后视力改善与对照组比较差异有统计学意义（P〈0．05）。TA组术后视网膜复发性脱离、黄斑前膜的复发率较对照组明显减少（P均〈0．05）。术后一过性眼压增高两组未见明显差异（P〉0．05）。结论使用TA染色的玻璃体切割视网膜复位手术能够降低术后复发性视网膜脱离和视网膜前膜的发生率,而且未增加手术并发症。     

Pars plana vitrectomy versus combined pars plana vitrectomy and scleral buckle for primary repair of rhegmatogenous retinal detachment

Objective

To compare pars plana vitrectomy (PPV) with PPV and scleral buckle (PPV/SB) for repair of rhegmatogenous retinal detachment (RRD).

Design

A retrospective chart review.

Participants

Patients who underwent PPV or PPV/SB for RRD repair at a single institution.

Methods

A retrospective chart review of patients in two different treatment groups and analysis of the anatomic and functional results.

Results

Single-surgery anatomic success was achieved in 31 of 37 (83.8%) phakic eyes that underwent PPV and in 66 of 68 (97.1%) phakic eyes that underwent PPV/SB (p = 0.0216). Among pseudophakic eyes, 42 of 48 (87.5%) in the PPV group and 62 of 66 (93.9%) in the PPV/SB group achieved single-surgery reattachment (p = 0.3175). Visual acuity improvement was marginally greater in the PPV group among phakic (p = 0.4898) and pseudophakic (p = 0.2465) eyes.

Conclusions

PPV/SB may be associated with a decreased risk for retinal redetachment when compared to PPV for repair of phakic RRD. In pseudophakic eyes, the anatomic success rate between the two techniques appears to be similar.