Functional outcome and prognostic factors in 304 eyes managed by retinectomy

BACKGROUND: This study was undertaken to relate the anatomic and functional results of patients who underwent retinectomy for complex retinal detachment (RD) to preoperative prognostic variables. METHODS: Three hundred and four eyes of 302 patients whose surgery involved retinectomy were included in the analysis. All eyes had established proliferative vitreoretinopathy (PVR grade C). The main outcome measures were (1) postoperative visual acuity of 6/24 or better, (2) status of the retina at the end of follow-up, and (3) incidence of hypotony whilst under review. RESULTS: PVR was secondary to rhegmatogenous RD in 237 eyes (78%), posterior trauma in 51 eyes (16.8%), tractional RD in vasoproliferative vasculitides in 12 eyes (4%), acute retinal necrosis in 2 eyes and endophthalmitis in 2 eyes. Complete reattachment rate after one operation was 51%, with final complete reattachment success rate of 72%. The visual acuity improved in 138 eyes (45%), remained the same in 73 eyes (24%) and became worse in 89 cases (29%). Postoperative visual acuity of 6/24 or better was significantly associated with preoperative vision, the duration of silicone oil tamponade, silicone oil removal and retinectomy size. There was also some evidence of association between visual outcome and the number of clock hours of retinal detachment. Final retinal attachment was significantly associated with silicone oil removal and preoperative vision, and final hypotony was significantly associated with silicone oil removal. The incidence of sympathetic ophthalmia in our study was 0.09% (one case). CONCLUSIONS: Good functional outcome is possible following retinectomy surgery despite advanced pathology and often multiple surgical procedures. Retinal redetachment as a result of reproliferation and hypotony appear to be the main reasons for anatomical and functional failure. The clinical features we have identified as good indicators for improved final visual acuity such as shorter tamponade duration, removal of silicone oil, smaller retinectomy size, fewer previous operations and better preoperative vision are surrogate markers of less advanced PVR and should prompt retinal surgeons to consider retinectomy at an earlier stage in the process of PVR development. Clinicians should be aware of the small risk of sympathetic ophthalmia from complex retinal surgery.     

Prevention and control of proliferative vitreoretinopathy: primary retinal detachment surgery using silicone oil as a planned two-stage procedure in high-risk cases

AIMS: For rhegmatogenous retinal detachment, reattachment with a single procedure is associated with better visual outcomes. In the past, silicone oil has been used mostly as a last resort following failed primary surgery. This study evaluates a novel approach to patients at high risk of primary failure, using silicone tamponade as the primary stage of a planned two-stage procedure. METHODS: We report a series of 140 eyes that underwent primary surgery for rhegmatogenous retinal detachment. Patients at higher risk of surgical failure (eg giant retinal tear, inability to posture, poor view, uncertainty of location of primary break, primary proliferative vitreoretinopathy (PVR), multiple tears with rolled posterior edges, retinoschisis/detachment, staphyloma with macular hole) were managed by a planned staged procedure using primary silicone oil tamponade. This was followed by silicone removal at a later date. RESULTS: Fifty-four eyes underwent scleral buckling alone, with primary success in 52/54 (96%). Fifty-three eyes underwent vitrectomy and gas, achieving primary success in 50/53 (94%). Thirty-three eyes were classified high risk and managed with primary silicone. Silicone was safely removed in 22/25. In eight eyes, silicone was retained without attempt at removal. In total, primary retinal reattachment was achieved in 128 of 140 eyes (91.4%). Of these, 124 (97%) did not require long-term tamponade. Only four eyes (2.9%) developed PVR. DISCUSSION: A planned two-stage approach to highrisk cases of retinal detachment using primary silicone oil tamponade followed by silicone removal can achieve a high primary reattachment rate with less than 3% incidence of PVR.     

Evaluation of silicone oil removal from eyes treated with retinotomy

PURPOSE: Long-term silicone oil tamponade may resulting late complications. The aim of our study is to find out the results of silicone oil removal in eyes treated with retinotomy. MATERIAL AND METHODS: Between January 1991 and December 1999 37 patients (37 eyes) were given silicone oil removal after retinotomy. The indications for vitrectomy with silicone oil tamponade and retinotomy were: rhegmatogenous retinal detachment (78.4%) and trauma (21.6%). Completion retinal attachment within at least 3 months without reproliferations indicated for silicone oil removal. RESULTS: With a minimum of 6 months process follow-up the retina was attached in 36 cases (97.3%). 29 (78.4%) eyes achieving final visual acuity 1/50 or better. Visual acuity remained unchanged in 64.9% cases. Minimal visual acuity 5/50 was achieved in 47.1% of eyes with retinotomy size smaller than 180 ae and in 40% of eyes with retinotomy size 180ae-360ae. Visual acuity at least 1/50 was achieved in 72.2% of eyes where silicone oil tamponade remained shorter than 6 months and in 84.2% when longer than 6 months. CONCLUSIONS: Silicone oil removal leads to the stabilisation of visual acuity in majority of eyes. Final visual acuity does not correlate with either the retinotomy size or with the duration of silicone oil tamponade. Risk of retinal redetachment after silicone oil removal in eyes treated with retinotomy may result in similar symptom as in eyes treated without retinotomy.     

Management of recurrent retinal detachment in silicone oil-filled eyes

PURPOSE: To report causes of failure, management options, and outcomes after reoperations for recurrent retinal detachment in silicone oil-filled eyes. METHODS: One hundred eighteen silicone oil-filled eyes with recurrent retinal detachment were managed with revision of vitrectomy with membrane surgery with or without silicone oil removal, just scleral buckling, or both. Anatomical success was defined as complete reattachment of the retina, and functional success was defined as recovery of ambulatory visual acuity of >or=5/200 at the last follow-up (mean follow-up, 29.7 months). RESULTS: In 82.2% of the cases, proliferative vitreoretinopathy was responsible for recurrent retinal detachment in silicone oil-filled eyes. Reoperations without removal of the silicone oil were performed in 65.3% of the cases. Anatomical success occurred in 62.7% of the eyes, and functional success occurred in 52.5%. Silicone oil was removed in 59.5% of the eyes with retinal reattachment; the retina remained attached in 90.9% of the eyes. Predictors of poor anatomical success were presence of posterior diffuse proliferative vitreoretinopathy and combined posterior and anterior proliferative vitreoretinopathy (P <0.02). CONCLUSION: Reoperations for recurrent retinal detachment in silicone oil-filled eyes were successful in nearly two thirds of the cases, and over one half of the eyes recovered ambulatory vision.     

玻璃体切除联合白内障手术治疗增生性糖尿病视网膜病变的临床效果

目的观察玻璃体切除硅油填充术联合超声乳化白内障摘除人工晶状体植入术治疗增生性糖尿病视网膜病变的临床疗效。方法根据患者自愿原则,将53例（57只眼）增生性糖尿病视网膜病变Ⅵ期患者分成联合手术组和玻璃体手术组。联合手术组33例（33只眼）,单纯玻璃体手术组20例（24只眼）。联合手术组进行玻璃体视网膜手术、硅油填充、超声乳化白内障摘除及折叠型人工晶状体植入术,单纯玻璃体手术组进行玻璃体视网膜手术及硅油填充。对两组术后视网膜复位情况和并发症进行对照分析。结果联合手术组视网膜完全复位29只眼,视网膜复位率为87．9％;单纯玻璃体手术组视网膜完全复位20只眼,视网膜复位率为83．3％,两组比较差异无统计学意义（P=0．626）。联合手术组发生虹膜新生血管1只眼（3．0％）,单纯玻璃体手术组发生虹膜新生血管2只眼（8．3％）。均发生在视网膜未复位的患者,两组比较差异无统计学意义（P=0．775）。结论玻璃体视网膜手术联合超声乳化白内障摘除人工晶状体植入术治疗增生性糖尿病视网膜病变安全有效,联合手术可避免再次行白内障手术。     

Results and complications of temporary silicone oil tamponade in patients with complicated retinal detachments

BACKGROUND: To assess the results and complications of temporary silicone oil tamponade in the treatment of complicated retinal detachments. METHODS: Fifty-eight consecutive eyes undergoing silicone oil removal were studied in a retrospective fashion. Forty-two eyes with proliferative vitreoretinopathy, nine eyes with giant tears, and seven traumatized eyes were included. In addition to anatomic and visual results, the following complications and their associated preoperative and intraoperative variables were assessed: glaucoma, hypotony, and keratopathy. RESULTS: Anatomic success was achieved in 81% of the eyes. Postoperative glaucoma was found in 12%, hypotony in 9%, and keratopathy in 7% of the eyes. Twenty-six (45%) of the 58 eyes had an increase in visual acuity of at least two Snellen lines after silicone oil removal. After multivariate logistic regression analysis for all variables versus the visual and anatomic results and versus the complications of glaucoma, hypotony, and keratopathy successively, a total of three or more operations (P < 0.05; odds ratio, 14.7) and the absence of an encircling band (P < 0.05; odds ratio, 29.9) were associated with redetachment, and a retinectomy size of more than 180 degrees was associated with hypotonia (P < 0.05; odds ratio, 67.5). CONCLUSIONS: Temporary silicone oil tamponade may be associated with a lower incidence of complications than recent studies have reported. Despite the acceptable risk of recurrent retinal detachment, the early removal of silicone oil may yield a lower rate of anterior segment complications and an increase in visual acuity in approximately half the eyes.     

光学相干断层扫描在高度近视黄斑裂孔硅油填充术后的疗效评估

目的: 光学相干断层扫描(optical coherence tomography,OCT)评价高度近视黄斑裂孔硅油填充术后疗效评估。方法: 回顾性分析20例20眼高度近视黄斑裂孔伴视网膜脱离行玻璃体切除术后硅油填充的病例,术后平均随访7mo,随访时给予OCT检查,评估黄斑裂孔闭合及视网膜复位,记录最佳矫正视力情况。结果: 术后OCT表现有3种:黄斑裂孔闭合2眼(10%),黄斑裂孔未闭合但视网膜复位16眼(80%),黄斑裂孔未闭合伴视网膜浅脱离2眼(10%)。术后最佳矫正视力较术前有所提高,视力的提高与黄斑孔的解剖学复位情况密切相关。术后无严重并发症发生。结论: OCT用于高度近视黄斑裂孔硅油填充术后随访可以明确诊断黄斑裂孔闭合及视网膜复位情况,为硅油取出时机提供参考。     

25G玻璃体切割术后空气与硅油填充治疗孔源性视网膜脱离的疗效比较

目的:比较25G玻璃体切割术(PPV)联合空气或硅油填充治疗孔源性视网膜脱离(RRD)的疗效。方法:前瞻性随机对照研究。收集2018-01/12经我院确诊的RRD患者146例146眼,根据25G PPV术后眼内填充物分为空气组(60例60眼)和硅油组(86例86眼)。术后随访6~12mo,分析两组患者最佳矫正视力(BCVA)、眼压、视网膜解剖复位率及并发症情况。结果:术后1mo,空气组患者BCVA为0.45±0.5,硅油组为0.78±0.65,两组患者BCVA均较术前明显改善,且空气组患者BCVA明显优于硅油组(均P<0.05)。术后3mo,空气组患者视网膜解剖复位率(93.3%)低于硅油组(97.7%),但无差异;术后6mo,两组患者视网膜解剖复位率均为100.0%。本研究纳入患者术中主要并发症是医源性裂孔(6.8%),术后主要并发症是高眼压,术后早期(7d内)硅油眼高眼压比例明显高于空气组(P<0.001),但随访期间两组患者均未出现感染性眼内炎、脉络膜出血等严重并发症。结论:对于简单新鲜的RRD患者,25G PPV术后空气和硅油填充视网膜解剖复位率无差别,术后早期空气填充眼视力优于硅油填充眼,术后高眼压发生率更低。     

Outcome of temporary silicone oil tamponade in complex rhegmatogenous retinal detachment

PURPOSE: To evaluate the anatomic and visual outcomes and complications of temporary silicone oil (SO) retinal tamponade in patients with complex rhegmatogenous retinal detachments (RD). METHODS: The retrospective study included 100 eyes of 93 consecutive patients. Indications for the use of SO were proliferative vitreoretinopathy (PVR) (30 eyes), difficult RD (30 eyes), giant retinal tears (17 eyes), RD after penetrating trauma (14 eyes), and macular holes in highly myopic eyes (9 eyes). Vitrectomy surgery was performed with 5000-centistoke SO as the retinal tamponade. All eyes underwent prophylactic 360 degree retinopexy at the time of the retinal reattachment operation. The mean duration of SO tamponade was 26.4 weeks, with a mean follow-up of 67.5 weeks after removal of SO. RESULTS:. In 6 of 100 eyes (6%), the retina redetached after removal of SO. Including the successfully reoperated eyes, the final anatomic success rate was 96%. Other complications were cataract (61%), increased intraocular pressure (13%), hypotony (4%), keratopathy (4%), intravitreal hemorrhage (1%), and suprachoroidal hemorrhage (1%). Correspondence analysis demonstrated that redetachment and hypotony were associated with PVR and trauma. Overall, good visual outcome (20/200 or better) was achieved in 51% of the whole study group, and in 70.6% of eyes with giant tears, 62.1% of eyes with difficult RD, 44.8% of eyes with PVR, 33.3% of eyes with macular holes, and 28.6% of eyes with trauma (p=0.0382). Logistic regression analysis identified initial visual acuity of 20/200 or better as a factor associated with good visual outcome and occurrence of retinal redetachment/hypotony and old age ( > or = 50 years) as factors negatively associated with good visual outcome. CONCLUSIONS: The low redetachment rate might be due to prophylactic 360 degree retinopexy. Giant tears had the best visual outcome. Redetachment/hypotony had a negative impact on achievement of good visual outcome and were associated with PVR and trauma.     

Long-term outcomes of heavy silicone oil tamponade for complicated retinal detachment

PURPOSE: To assess the long-term success rates and complications of heavy silicone oil tamponade (Oxane HD) in the management of complicated retinal detachment with proliferative vitreoretinopathy (PVR). METHODS: Twenty-one eyes of 21 patients with complicated retinal detachment and PVR were included in this study. Vitreoretinal surgery with heavy silicone oil (Oxane HD) tamponade was performed in all patients. Heavy silicone oil was injected by perfluorocarbon liquid-air-silicone oil exchange, and was removed after 3 months. The main outcomes of the surgery including the success and complication rates were evaluated during the mean follow-up period of 11.4+/-0.88 months. Wilcoxon signed ranks test was used for statistical analysis of visual acuity changes. The outcomes of our study were compared with those of the previous studies. RESULTS: All eyes had complicated retinal detachment with PVR Grade C3 or worse. Retinal detachment was rhegmatogenous in 6 eyes, secondary to previous detachment surgery in 11 eyes, secondary to proliferative diabetic retinopathy in 3 eyes, and secondary to perforating eye injury in 1 eye. The overall anatomic success rate was 80.9% at the end of the follow-up period. The overall visual success rate was 42.8%, with no statistically significant difference from baseline (p>0.05). Postoperative complications included severe reproliferation (4 eyes), intraocular pressure rise (3 eyes), anterior dislocation of silicone oil (2 eyes), posterior subcapsular cataract formation (4 eyes), vitreous hemorrhage (1 eye), rubeosis iridis (3 eyes), optic atrophy (1 eye), and ocular pain and photophobia (21 eyes). CONCLUSIONS: According to the results of this study, vitreoretinal surgery with temporary heavy silicone oil tamponade appears to increase the anatomic success rates with minimal complication rate in cases with complicated retinal detachment and PVR.     

Silicone oil-RMN3 mixture ("heavy silicone oil") as internal tamponade for complicated retinal detachment

PURPOSE: To evaluate the efficacy and safety of a silicone oil-RMN3 mixture ("heavy silicone oil") as heavier as water internal retinal tamponade after vitrectomy for complicated retinal detachment. The relative density of the heavier-than-water silicone oil was 1.03 g/cm3, and the viscosity was 3,800 cSt. Heavy silicone oil is designed to tamponade the inferior retina in complicated retinal detachment. METHODS: Patients with a complicated retinal detachment involving the inferior part of the retina requiring internal tamponade with silicone oil were recruited for this prospective study. Inclusion criteria were retinal detachment secondary to proliferative vitreoretinopathy (stage > or = C2), inferior or posterior tears, or penetrating trauma. The heavy silicone oil was injected at the end of surgery after peeling of retinal membranes or retinotomy. Follow-up examinations were scheduled at 1, 3, 6 months, and 1 year after the initial surgery. RESULTS: A total of 33 eyes of 33 patients aged from 20 to 84 years (mean, 56 +/- 18 years) were treated with heavy silicone oil. Follow-up ranged from 12 to 16 months. Rhegmatogenous retinal detachment with significant proliferative vitreoretinopathy accounted for 17 cases, inferior holes for three, and trauma with retinal detachment for three. Initial visual acuity ranged from 20/50 to hand motions. Initial retinal reattachment was achieved in all cases. Complications included increased intraocular pressure in six eyes (18%), intraocular inflammation and synechia formation in one eye (3%), a central retinal artery occlusion after heavy oil removal in one eye, and scattered retinal hemorrhages during follow-up in two eyes (6%). Significant emulsification was not observed during intraocular tamponade with heavy silicone oil. At the last follow-up, all eyes had macular attachment, and 24 eyes had a visual acuity better than or equal to 20/400. CONCLUSIONS: The results of this prospective study show the good intraocular tolerance of heavy silicone oil as tamponade in complicated retinal detachment. Its specific gravity allows for sufficient tamponade of inferior retinal tears for at least 3 months without significant side effects.     

Treatment of retinal detachment resulting from posterior staphyloma-associated macular hole in highly myopic eyes

PURPOSE: To evaluate the surgical outcome of retinal detachment resulting from a posterior staphyloma-associated macular hole in highly myopic eyes. METHODS: Fifty-seven consecutive highly myopic eyes with retinal detachment resulting from a posterior staphyloma-associated macular hole diagnosed between January 1993 and June 2003 were retrospectively studied. Anatomical reattachment of the retina and best-corrected visual acuity were measured. RESULTS: Six different operative methods were used to treat this condition with diverse retinal reattachment rates: long-acting gas tamponade only (12.5%); pars plana vitrectomy (PPV) with long-acting gas tamponade (42.8%); PPV with epiretinal membrane (ERM) peeling and long-acting gas tamponade (50.0%); encircling scleral buckling combined with PPV and long-acting gas tamponade (57.1%); encircling scleral buckling combined with PPV, ERM peeling, and long-acting gas tamponade (40.0%); and encircling scleral buckling combined with PPV and silicone oil tamponade (75.0%). Overall, successful retinal reattachment was achieved in 25 (43.9%) of 57 eyes after the first surgery. However, the ultimate success rate of retinal reattachment was 77.2% (44 of 57 eyes) after subsequent surgery. The mean preoperative visual acuity +/- SEM (in logarithm of the minimal angle of resolution units) was 2.08 +/- 0.55, and the mean postoperative visual acuity +/- SEM was significantly increased to 1.87 +/- 0.54 at the last follow-up (P = 0.038). The major cause of recurrent retinal detachment in the long-acting gas tamponade group was nonclosure of the macular hole. For vitrectomized eyes, the major cause was reopening of the macular hole, even with ERM formation and proliferative vitreoretinopathy. There was no obvious correlation between the extent of the detachment or lens status and the reattachment rate. CONCLUSIONS: The major causes of recurrent retinal detachment in the long-acting gas tamponade and vitrectomized groups were nonclosure of the macular hole and reopening of the macular hole, respectively. Furthermore, a lesser extent of retinal detachment was not associated with a higher anatomical success rate. More aggressive treatment such as silicone oil tamponade may need to be performed to overcome reduced natural adhesion due to posterior staphyloma with marked chorioretinal atrophy. Failure to initiate aggressive treatment can result in an unsatisfactory outcome and repeated surgery.     

Primary silicone oil tamponade in the management of severe intraocular foreign body injuries: an 8-year follow-up

PURPOSE: To evaluate the long-term outcome of pars plana vitrectomy and primary silicone oil tamponade in patients with severe intraocular foreign body (IOFB) injuries and high risk of proliferative vitreoretinopathy (PVR). METHODS: This retrospective consecutive study included 23 patients with severe IOFB injuries who had extensive lacerations including sclera, choroid, and retina, and were complicated by predictive factors for elevated proliferative activity and an unfavorable outcome. All patients underwent pars plana vitrectomy, removal of the IOFB, and primary silicone oil tamponade and were followed up for a mean 8.9 years. Main functional outcome was assessed as final best-corrected visual acuity. Anatomic success was defined as permanent retinal attachment. RESULTS: PVR occurred in 70% of all eyes and required 16 revisions. Silicone oil was removed in 78% of the eyes after a mean tamponade duration of 9.1 months. Complete retinal attachment was achieved in 83% of the eyes. Three eyes developed a persisting hypotony that was stabilized under permanent silicone oil. Functional stabilization was observed in the third year resulting in a final visual acuity of 20/630. Useful vision of better than 20/400 could be preserved in 55% of the patients. Only one eye underwent a late enucleation after 6.8 years. CONCLUSIONS: Primary silicone oil stabilizes the retina during the critical period of active PVR and may limit the visual loss in selected high-risk eyes in the long term.     

Outcomes of surgery for retinal detachment associated with proliferative vitreoretinopathy using perfluoro-n-octane: a multicenter study

PURPOSE: To report visual acuity and anatomical outcomes, as well as complications, of management of complex retinal detachment with proliferative vitreoretinopathy using pars plana vitrectomy and intraoperative perfluoro-n-octane (PFO), and to investigate clinical features associated with anatomical and visual acuity outcomes. DESIGN: Prospective, noncomparative, interventional multicenter study. METHODS: The study included 555 patients (555 eyes) 15 months of age or older who underwent pars plana vitrectomy for complex retinal detachment associated with proliferative vitreoretinopathy with intraoperative PFO at 24 study sites between April 1994 and February 1996. Main outcome measures included visual acuity and rates of retinal reattachment, reoperation, retained PFO, corneal edema, elevated intraocular pressure ([IOP] > 25 mm Hg), hypotony (IOP < 5 mm Hg), and cataract. All outcome measures were assessed at 1 day, 1 week, 1 month, 3 months, and 6 months postoperatively and at the last examination. RESULTS: The study included 555 eyes of 555 patients followed up at a median of 5.6 months. Visual acuity of 20/200 or better was recorded in 51 (10%) patients preoperatively and 85 (24%) at 6 months postoperatively. Among the 465 eyes with both preoperative and final visual acuities available, postoperative visual acuity improved in 274 (60%) eyes, remained stable in 106 (23%), and worsened in 85 (18%) eyes. Six-month follow-up data were obtained for 356 (65%) eyes; the retina was attached in 279 (78%) eyes and retained PFO was noted in 20 (6%). Throughout follow-up, 238 of 555 (43%) eyes underwent reoperation for recurrent retinal detachment. At 6 months, corneal edema, elevated IOP, and hypotony were noted in 26 of 356 (7%), 6 of 356 (2%), and 48 of 356 (15%) eyes, respectively. Of the 114 phakic eyes without significant cataract preoperatively, 105 (92%) developed a significant cataract or underwent cataract surgery during study follow-up. Operative factors significantly (P <.05) associated with recurrent retinal detachment include female gender, creation of a relaxing retinotomy, and the use of sulfur hexafluoride (SF(6)) gas tamponade, air tamponade, or no tamponade (compared with perfluoropropane [C(3)F(8)] or silicone oil tamponade). Factors significantly associated with final vision of 20/200 or better include first operation anatomic success, prior scleral buckling procedure, no diabetes mellitus, no prior vitrectomy, no silicone oil retinal tamponade, and no relaxing retinotomy. Cases that require relaxing retinotomy generally represent more severe cases of complex retinal detachment and, therefore, relaxing retinotomy is likely associated with a poorer visual outcome owing to the nature of the cases selected for this procedure. CONCLUSIONS: In the management of complex retinal detachment associated with proliferative vitreoretinopathy, pars plana vitrectomy and use of intraoperative PFO was associated with retinal reattachment and preserved visual acuity in most eyes.     

Prognostic factors associated with outcomes after giant retinal tear management using perfluorocarbon liquids

PURPOSE: To identify prognostic factors for visual acuity and anatomic outcomes associated with giant retinal tear management using intraoperative perfluorocarbon liquids. METHODS: All patients with giant retinal tears without proliferative vitreoretinopathy (PVR) who underwent management with intraoperative perfluorocarbon liquids between 1994 and 2005 were reviewed. RESULTS: The study included 115 patients (117 eyes), 93 (80.9%) males and 22 (19.1%) females, with a mean age of 30.3+/-15.2 years. Mean follow-up period was 29.7+/-26.7 months. Success rate with primary procedure was 78.6%, which increased to 94% with multiple surgeries. On univariate analysis, factors significantly associated with final visual acuity better than 20/200 included phakic/clear lens at presentation (p=0.0113), partial retinal detachment (p=0.0233), absence of all postoperative complications (p=0.0122), absence of recurrent retinal detachment (p=0.0406), and absence of postoperative PVR (p=0.0062). Logistic regression analysis highlighted that phakic/clear lens at presentation, unfolded flap of the giant tear, absence of postoperative cataract, and absence of postoperative PVR were associated with final visual acuity better than 20/200. On univariate analysis, use of gas tamponade was significantly associated with recurrent retinal detachment (p=0.0190). Logistic regression analysis highlighted that placement of an encircling scleral buckle and use of silicone oil tamponade were associated with anatomic reattachment with primary procedure. CONCLUSIONS: Encircling scleral buckling and silicone oil tamponade decrease the risk of recurrent retinal detachment.     

硅油长期眼内填充的并发症及预后分析

目的:观察长期硅油填充眼的眼部改变,分析其长期填充的原因及预后。方法:回顾性分析我院硅油填充时间≥12mo的临床病例资料共44例,男31例,女13例,年龄27月龄～72岁。包括:外伤性视网膜脱离11例;眼球破裂伤11例;眼球穿通伤3例;球内异物5例;复发性视网膜脱离9例;增生性糖尿病视网膜病变5例。对硅油填充时间、视力、视网膜在位情况及眼部并发症等情况进行分析总结。结果:硅油填充时间为12mo～13a,平均34mo。视力提高者23例(52%),下降者8例,无改善者13例。37例(84%)视网膜完全复位,6例部分复位,1例未复位。并发症包括:并发性白内障10例;高眼压4例;低眼压2例;硅油乳化7例;带状角膜变性9例;角膜内皮失代偿3例;眼球萎缩3例;视神经萎缩2例;虹膜囊肿及结膜下囊肿各1例;无明显并发症者10例,占23%。结论:硅油长期眼内填充对于部分特殊病例具有一定的可行性及合理性,突出强调了术后定期随访复查的重要性。     

Preservation of anterior capsule during vitrectomy and lensectomy for retinal detachment with proliferative vitreoretinopathy

PURPOSE: To report a series of 15 eyes with rhegmatogenous retinal detachment and proliferative vitreoretinopathy (PVR) or at high risk for advanced PVR, which underwent pars plana vitrectomy (PPV) and lensectomy (PPL) with preservation of the anterior capsule. DESIGN: Retrospective noncomparative case series. PARTICIPANTS: Fifteen consecutive patients with retinal detachment and varying degrees of PVR in one eye. METHODS: All eyes had undergone PPV and PPL with preservation and polishing of the anterior capsule and had at least 6 months of follow-up. Of the 15 eyes, grade C PVR was present preoperatively in 11 and was anterior in 5. Seven of 15 eyes had gas and 8 of 15 had silicone oil tamponade. Eight of 15 eyes had subsequent posterior chamber intraocular lens (PCIOL) placement; 5 eyes had simultaneous silicone oil removal. One eye had a PCIOL placed at the time of the PPL. MAIN OUTCOME MEASURES: Visual acuity, retinal reattachment, complications of gas or silicone oil tamponade, and anterior capsular clarity. RESULTS: Fourteen eyes had complete retinal reattachment at the final visit (1 of 15 had macular redetachment only). Final visual acuity was better or equal to preoperative acuity in all eyes, improving by 4 +/- 4 lines overall. No eyes had corneal decompensation, pupillary block, or other vision-threatening anterior segment complication. The anterior capsule remained centrally clear in the 13 eyes that did not have a primary central capsulotomy. One eye with minimal preoperative PVR developed hypotony. CONCLUSIONS: Vitreoretinal surgeons can preserve the anterior capsule in eyes with retinal detachment and PVR to help prevent intraoperative and postoperative complications of gas or silicone oil, simplify future PCIOL placement, and maintain a normal iris appearance.     

Retinal redetachment after silicone oil removal in proliferative vitreoretinopathy: a prognostic factor analysis

PURPOSE: To determine the prognostic factors associated with retinal redetachment after 1300-centistokes silicone oil removal in rhegmatogenous retinal detachments (RDs) associated with grade C proliferative vitreoretinopathy (PVR). DESIGN: Nonrandomized, retrospective, comparative interventional trial. METHODS: One hundred and forty-seven eyes with RD and grade C PVR treated with silicone oil tamponade, with subsequent silicone oil removal, in an institutional setting. Main outcome measures included anatomic success, defined as complete retinal attachment after silicone oil removal, and best-corrected visual acuity (BCVA) after silicone oil removal. RESULTS: Silicone oil was removed after a mean tamponade period of 12.4+/-9.8 months. The mean follow-up after silicone oil removal was 22.1+/-18.7 months (range, 6.0 to 71.0 months). The retina remained attached in 120 eyes after oil removal. The overall anatomic success rate was 81.6%+/-3.2%. Logistic regression showed that an increased number of previous unsuccessful RD surgeries (odds ratio [OR], 0.39; 95% confidence interval [CI], 0.19 to 0.80; P=.010) and longer axial lengths (OR, 0.42; 95% CI, 0.15 to 0.87; P=.032) were associated with a lower anatomic success rate. Previous vitrectomy, previous scleral buckling procedure, 12% perfluoropropane-air exchange immediately after silicone oil removal, and duration of silicone oil tamponade were not statistically associated with the anatomic success rate. Anatomic success was associated with a significantly better BCVA (1.169+/-0.475 vs 1.520+/-0.381 logarithm of the minimum angle of resolution; P<.001). CONCLUSIONS: The number of previous surgeries and axial length, rather than the nature of the previous surgical procedures, were significant prognostic factors for anatomic success after silicone oil removal.     

重硅油在术后无法保持俯卧位患者的应用

目的 分析重硅油在术后无法长期保持俯卧位患者中应用的效果、并发症以及重硅油的取出时间。方法 玻璃体视网膜等术后不能长期保持俯卧位患者12例（12只眼）,玻璃体切除或联合视网膜手术中填充重硅油,对视网膜未复位患者1～3．5月后二期将重硅油取出。在患者身体条件允许的情况下,采用普通硅油或者惰性气体再次填充。主要观察指标为视网膜复位率、视力、眼压、眼前段情况、重硅油乳化率及重硅油的取出时间。结果 一次填充重硅油后视网膜复位率为66．67％（8／12）;未复位患者二期填充普通硅油或者惰性气体后视网膜复位率75．00％（3／4）,总复位率91．67％（11／12）。平均随访3～12个月,随访结束时所有患者眼内重硅油均已取出。术后视力较术前明显提高者6例。术后未发现难以控制的高眼压,保留晶状体者均出现不同程度的白内障,重硅油乳化率91．67％（11／12）。本组所有患者均无眼外不可耐受的不适。结论 应用重硅油眼内填充对不能长期保持俯卧位的术后患者效果较好,并发症少,患者容易耐受,但是重硅油乳化时间较短,应根据视网膜情况适时取出。     

Encircling band,laser retinopexy and lens removal as standard procedure in complicated retinal detachment shows a good clinical outcome

Purpose: To evaluate vitrectomy in conjunction with the use of perfluorocarbon, cerclage, laser retinopexy, lens removal and silicone oil as surgical treatment of proliferative vitreoretinopathy associated with retinal detachment. Methods: Sixty‐two eyes of 62 patients were treated for complicated retinal detachment following failed prior scleral buckling. Outcome measures were; retinal reattachment rate 6 months after silicone oil removal, status of the retina, visual acuity (VA), duration of silicone tamponade and frequency of reoperations. Results: The final reattachment rate was 95%. Reoperations had to be performed in 25% of patients. Eighty‐one per cent of these patients received one and 19% two or more operations following silicone oil implantation. The mean time to reoperation was 1.8 ± 1.4 months. Silicone oil was removed after 5.6 ± 4.1 months following the last vitreoretinal procedure in 90%, respectively, 95% with attached retina. Five per cent experienced retinal detachment after silicone oil removal. At the end of follow‐up, the mean VA was 0.13 ± 0.26 Snellen. Seventy per cent of patients achieved a vision of 20/200 or better (mean 0.25 ± 0.27). Conclusion: Our study demonstrates good final outcomes when a rigorous surgical approach was used. Furthermore, this standard procedure reduces the need for reoperations and consequently improves the functional outcome.