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1.
目的评价后房型人工晶状体睫状沟缝线固定术的效果。方法24例(24眼)无晶状体眼后囊破裂或无后囊者,其中Ⅰ期后房型人工晶状体睫状沟缝线固定术13例(13眼);Ⅱ期后房型人工晶状体缝线固定术11例(11眼)。结果24例(24眼)手术均顺利完成。随诊1~12月,视力≥0.3者20例占83.33%;0.1~0.2者4例(4眼)占16.67%。术后的主要并发症是角膜水肿和葡萄膜炎,但1周内都能恢复。结论后房型人工晶状体睫状沟缝线固定术是后囊破裂或无后囊者进行后房型人工晶状体植人的方法之一。  相似文献   

2.
Wu W  Li Q  Yan D  Zhang J  Chen Y  Zhang H 《眼科学报》2011,26(2):59-65
Purpose:To evaluate the clinical efficacy and safety of sulcus transscleral intraocular lens suture fixation with small incision through scleral tunnel in eyes the with posterior capsule defect or insufficient zonula support. Methods:Thirty nine eyes with severe posterior capsule defect and zonula damages caused by small-incision cataract surgery,and those with capsule absence or intraocular lens dislocation were selected in this investigation from February 2007 to December 2009.Sulcus transscleral intraocular lens suture combined with puncture needle-guided external approach and."one- or two-point fixation" method in the small sclera tunnel incision were employed. Results:The mean follow-up was 12.1 months (range from 3 to 28 months). Six eyes were complicated by some eye diseases postoperatively.The best-corrected visual acuity was 20/40 or better in other 34 eyes.(87.17%).All eyes with secondary IOL fixation presented equal or better naked visual acuity than best-corrected visual acuity best-corrected preoperatively.No intraoperative and postoperative complications such as hemorrhage, retinal detachment, intraocular lens tilt and decentration occurred. Conclusion:Sulcus transscleral intraocular lens suture fixation via small sclera tunnel incision was easy to operate and master,required less operative time,and made primary intraocular lens fixation more effective in eyes with posterior capsule defect or insufficient zonula support in small sclera tunnel incision surgery.In addition,the technique was safe and effcacious for secondary intraocular lens fixation.  相似文献   

3.
微小切口推注式人工晶状体睫状沟悬吊术临床应用   总被引:1,自引:1,他引:0  
目的:探讨微小切口推注式折叠人工晶状体睫状沟悬吊术的有效性和安全性。方法:选择因晶状体后囊破裂或悬韧带断裂不能正常植入后房型人工晶状体的患者52例52眼,利用推注器系统,通过3.2mm的透明角膜小切口,把襻预扎了聚丙烯缝线的折叠人工晶状体植入后房并缝合固定于睫状沟,观察术后视力、角膜散光度及并发症。结果:所有患者术后裸眼视力均提高,其中1.0以上8眼,0.6~0.8为18眼,0.4~0.6为16眼,0.4以下10眼。术后1wk;1,3mo视力在0.5以上者分别为33眼(63%)、39眼(75%)、41眼(79%)。术前及术后1wk;1,3mo的平均角膜散光度分别为1.86±1.65D,2.09±1.28D,1.92±1.34D和1.77±1.16D,术后各时期与术前的角膜散光度差别均无统计学意义(P>0.05)。术中、术后没有出现严重并发症。结论:微小切口推注式折叠人工晶状体睫状沟悬吊术为治疗晶状体、玻璃体切除术后,无晶状体囊支持的患者,提供了一个更安全可靠的人工晶状体植入方法。  相似文献   

4.
The safety and efficacy of a modified technique for transscleral fixation of a foldable posterior chamber intraocular lens (IOL) for intracapsular aphakia (secondary IOL) or after complicated phacoemulsification was evaluated. All eyes had inadequate or no posterior capsular support. Follow-up was between 4 and 26 months (mean, 12 months). Uncorrected visual acuity improved (> 2 lines) in all patients. During follow-up, the IOL was correctly positioned in all cases. There were no major complications, such as endophthalmitis or suture erosion through the conjunctiva at the site of fixation. No patient required further surgical interventions. This modified technique of transscleral fixation of foldable posterior chamber IOL offers the advantages of a small incision and rapid visual rehabilitation, and minimizes the risk of intraoperative and postoperative complications.  相似文献   

5.
目的:探讨无巩膜瓣无线结的巩膜层间锯齿状缝线技术(ZST)固定脱位人工晶状体(IOL)的临床疗 效。方法:回顾性病例研究。选择2011 年6 月至2016年12 月在台州市眼科医院收治的采用无巩膜瓣 无线结的巩膜层间ZST重新复位固定的IOL脱位者21例(21眼),其中不全脱位者15眼,全脱位者6眼。 术后2周、1个月、3个月及6个月定期随访。之后每12个月随访1次,共4~8次。观察分析患者术后 的IOL位置和稳定性、术后视力、眼压及并发症情况。结果:术后所有术眼IOL位置良好,无偏位或 IOL瞳孔夹持者,视力均较术前明显改善,眼压正常。随访期间,所有术眼IOL均在位居中,无偏位 和倾斜现象;未见IOL巩膜ZST固定处聚丙烯线头侵蚀暴露,无聚丙烯线滑脱及局部结膜充血或眼 内感染者;视力稳定良好,无高眼压或继发青光眼者。结论:无巩膜瓣无线结的巩膜层间ZST固定 脱位IOL效果良好,术后IOL固定牢固,无线结侵蚀暴露及眼内感染风险。  相似文献   

6.
BACKGROUND AND OBJECTIVE: The results and complications of posterior chamber intraocular lens (IOL) implantation by a 4-point scleral fixation technique are described. PATIENTS AND METHODS: Fifty eyes of 47 patients who underwent scleral-fixated IOL implantation were retrospectively evaluated. Twenty-one (42%) eyes had a history of trauma and 29 (58%) eyes had previously undergone cataract surgery. In all cases, IOL implantation by 4-point scleral fixation was performed and the knots of fixation sutures were rotated and buried in the globe. The IOL position was adjusted by suture rotation for best centration. RESULTS: The mean follow-up time was 7 +/- 4 months. Four (8%) eyes had minimal corneal edema preoperatively. Cystoid macular edema was noted in 2 (6.8%) eyes in the cataract surgery group and 8 (38%) eyes in the posttraumatic group. Two (9.5%) eyes in the posttraumatic group had atrophic macular changes and 1 (4.7%) had corneal scarring, which impaired vision. No complications such as knot exposure, tilting of the IOL, decentralization, or endophthalmitis were noted postoperatively. Postoperative mean corrected visual acuity was 0.4 +/- 0.3 in the posttraumatic group and 0.4 +/- 0.2 in the cataract surgery group. CONCLUSION: The 4-point scleral fixation technique resulted in no serious postoperative complications such as suture exposure and endophthalmitis. Because the knot can be rotated and buried in the globe, knot exposure is less likely to occur. This procedure is more effective than other techniques regarding IOL centralization.  相似文献   

7.
BACKGROUND: Most revisions after intraocular lens (IOL) implantation are due to an insufficiency of the zonular apparatus. Frequently, an inferior decentration can be seen ("sunset syndrome"). In this clinical study, suture refixation of the haptics to the iris was assessed. Functional and morphological results were considered. METHOD: 21 eyes with subluxation of the IOL were treated with iris sutures for refixation. The operation was performed under topical and intracameral anaesthesia. Refixation was achieved by suturing one or both haptics to one or two fixation points in the outer periphery of the iris. Complete zonular dialysis made it necessary to suture at two fixation spots. All eyes were examined preoperatively, at one day and three months postoperatively considering functional results and postoperative IOL centration. RESULTS: In 15 eyes (71%), the IOL was optimally centred postoperatively. In 5 eyes (24%), a revision had to be performed due to instable centration. In one further case the IOL was minimally decentred, but its position was stable. Best corrected visual acuity was 0.3 +/- 0.2 preoperatively and 0.5 +/- 0.2 after three months. The mean refraction was stable in the postoperative course and astigmatism did not change significantly. There were no major complications intraoperatively or postoperatively, but a localised iris atrophy at the haptic fixation points was noted. CONCLUSIONS: In the presence of a partially intact zonular apparatus, iris sutures are a safe and minimally invasive method for fixing a decentred IOL. Postoperative centration and functional results were stable after 3 months.  相似文献   

8.
Secondary intraocular lens implantation in aphakia.   总被引:1,自引:0,他引:1  
We retrospectively studied secondary intraocular lens (IOL) implantation in 165 aphakic patients (162 eyes) from May 1983 to August 1989. Seventy-five eyes (46.3%) had secondary IOL implantation; these included seven cases of trans-sulcus scleral fixation of the posterior chamber lens. The remaining 87 eyes could not have secondary IOL implantation because of the ocular conditions. The most common reason for secondary implantation was to relieve the discomfort caused by spectacles or contact lenses (56.2%). An anterior chamber lens was used in 43 eyes (57.3%) and a posterior chamber lens in 32 eyes (42.7%). Final postoperative visual acuity of 20/40 or better was achieved in 92.0% of the eyes with posterior chamber lenses, in 71.4% of the eyes with anterior chamber lenses, and in 57.1% of the eyes with scleral-fixated posterior chamber lenses. Endothelial cell loss was greater in the eyes with anterior chamber lenses than in the eyes with posterior chamber lenses. Of the cases that could be followed, 83.3% showed endothelial cell loss of less than 30% at six months postoperatively. Postoperative complications such as cystoid macular edema, persistent fibrinous membrane formation, and neovascular glaucoma occurred in only ten (13.3%) of the 75 eyes that had secondary implantation. These complications occurred more frequently in eyes that had anterior chamber lenses with anterior vitrectomy. There were no noticeable complications in the eyes that had trans-sulcus scleral fixation of posterior chamber lenses. Updrawn pupil, prolapsed vitreous, and peripheral anterior synechia were common conditions preventing secondary IOL implantation.  相似文献   

9.
PURPOSE: To describe a technique for suture fixation of silicone intraocular lenses (IOLs) to the iris and compare the outcomes to those in published data. SETTING: Subspecialty cornea/anterior segment private practice, Indianapolis, Indiana, USA. METHODS: This retrospective review comprised 121 consecutive cases of secondary IOL implantation or IOL exchange between 1993 and 1998. All cases had concurrent anterior or posterior vitrectomy. Intraocular lens exchange was performed in 96 eyes, secondary IOL implantation in 20 eyes, and primary IOL implantation in 5 eyes. Penetrating keratoplasty (PKP) was performed concurrently in 93 eyes, extracapsular cataract extraction in 1 eye, intracapsular cataract extraction in 2 eyes, pars plana lensectomy in 2 eyes, and Molteno tube shunt placement for uncontrolled glaucoma in 1 eye. Outcomes measured were graft survival, visual acuity, new onset or worsening of glaucoma, and complications related to surgery. RESULTS: Graft survival at last follow-up was 89.2% in patients having PKP. Visual acuity was 20/80 or better in 58.3% and 20/40 or better in 30.5% of eyes with transplants. Without transplants, visual acuity was 20/80 or better in 82.0% and 20/40 or better in 57.1%. Glaucoma developed or worsened in 24.7% and improved in 16.1% with transplants; it developed or worsened in 7.0% and improved in 17.8% without transplants. Retinal detachment occurred in 1 eye with a transplant. In the nontransplant group, major complications were bullous keratopathy (n = 2) and tilted IOL (n = 1). CONCLUSIONS: Iris fixation of posterior chamber silicone IOLs may decrease the possibility of late suture breakage and dislocation of the IOL, as well as the risk of endophthalmitis. Graft survival, visual acuity, glaucoma, and complications are similar to those of other methods of IOL fixation reported in the literature.  相似文献   

10.
目的 探讨晶状体玻璃体切割术后经颞侧透明角膜隧道切口的二期折叠式人工晶状体植入术的手术方法和疗效.方法 通过颞侧透明角膜隧道切口对晶状体玻璃体切割术后6~12个月的29例(29眼)二期植入折叠式人工晶状体,用聚丙烯缝线将人工晶状体襻固定于睫状沟中.术后随访6~18个月,观察术后视力、人工晶状体位置及术中术后并发症.结果 术后3个月裸眼视力>0.5者16眼,0.3~0.5者12眼,0.2~0.3者1眼.术后视力与术前最佳校正视力相比较,差异无统计学意义(P>0.05).手术并发症主要为眼内出血(1眼)、人工晶状体倾斜(2眼).结论 经颞侧透明角膜隧道切口及睫状沟缝合固定襻的折叠式人工晶状体植入术,手术效果可靠,并发症少,是晶状体玻璃体切割术后无晶状体眼屈光矫正的理想手术方式.  相似文献   

11.
Kanigowska K  Grałek M 《Klinika oczna》2007,109(10-12):421-424
PURPOSE: We describe a technique for secondary intraocular lens implantation in the ciliary sulcus in patients with congenital cataract or with primary aphakia. MATERIAL AND METHODS: Secondary intraocular lens implantation was performed in 119 eyes of 74 children. The average age at this procedure was 6.8 (range 22 months to 10 years), whereas the average age at primary cataract surgery was 18 weeks (range 7 weeks to 19 months). The average follow-up was 5.7 years. All eyes received a PMMA IOL. The sites of IOL fixation was ciliary sulcus. All patients had cataract extraction (lensectomy) via the pars plana, leaving in situ peripheral collarette of capsular bag to enable secondary lens implantation. RESULTS: Complications included IOL dislocation in five eyes, visual axis opacification in four, pupillary capture in one eye. CONCLUSIONS: Secondary IOL implantation in the ciliary sulcus is a safe and effective method to correct aphakia in pediatric patients with adequate capsular support. This surgical procedure is associated with a low rate of complications.  相似文献   

12.
韩琪  颜华  陈松  赫天耕  许瀛海 《眼科研究》2004,22(6):659-661
目的 探讨玻璃体切割术后无玻璃体眼经巩膜睫状沟后房型人工晶状体固定手术方法并评价其疗效。方法 对8例(8眼)玻璃体切割术后无玻璃体眼行经巩膜睫状沟后房型人工晶状体固定术(PC-IOL)。术后随访3~56个月。结果 术后裸眼视力均较术前提高,术后最佳矫正视力均达到或接近术前最佳矫正视力,其中≥0.5者1眼,≥1.O者3眼。术中低眼压2眼、眼球塌陷1眼,术后前房积血3眼,玻璃体积血3眼,人工晶状体脱位1眼,一过性高眼压3眼,黄斑囊样水肿3眼,视网膜脱离1眼。结论 经巩膜睫状沟PC-IOL固定术是无玻璃体并伴有眼前段结构紊乱眼恢复视力的补救手术。术中注意稳定眼压,可减少或避免术中、术后并发症。  相似文献   

13.
PURPOSE: To evaluate the efficacy and safety of an ab externo suture retrieval and scleral fixation technique in the treatment of subluxated posterior chamber intraocular lenses (PC IOLs). SETTING: Academic tertiary care centers. METHODS: Surgical databases from 2 surgeons were reviewed for consecutive cases from March 2000 to April 2004 in which the ab externo scleral suture fixation technique was used and a minimum follow-up of 3 months was completed. Patient charts were reviewed for 15 eyes that had decentered in-the-bag PC IOLs, 12 eyes with subluxated sulcus or bag-sulcus positioned PC IOLs, and 3 eyes with PC IOLs dislocated into the vitreous. RESULTS: The mean time from cataract extraction to PC IOL stabilization was 3.4 years (range 2 days to 10.9 years). Surgical repositioning was successfully performed in all patients. After a mean follow-up of 14.7 months, the mean best corrected visual acuity (BCVA) improved from 20/140 to 20/40 (P = .0001). All patients had stable or improved BCVA. All patients with a successfully completed procedure achieved an adequately centered PC IOL postoperatively. One patient (3.3%) developed a significant intraoperative vitreous hemorrhage requiring the procedure to be aborted, but reoperation 3 months later was successful. Postoperative complications included persistent elevated intraocular pressure in 2 eyes (6.7%) and chronic cystoid macular edema in 1 eye (3.3%) that resolved with medication. CONCLUSION: The ab externo suture loop retrieval and scleral fixation technique was effective in repositioning decentered, subluxated, or dislocated PC IOLs with excellent visual outcomes.  相似文献   

14.
BACKGROUND: To evaluate the results of transscleral fixation of foldable hydrophilic acrylic intraocular lenses (IOLs). METHODS: Twenty eyes of 16 patients, aphakic after phacoemulsification (PE) surgery and with at least 6 months follow-up, were included in the study. All eyes were implanted with single-piece hydrophilic foldable acrylic lenses by transscleral fixation, either with PE surgery (2 eyes) or secondarily. RESULTS: Follow-up was 11.6 months (SD 4.85, range 6-20 mo). Age was 62.3 years (SD 12.95, range 18-78 y); 10 patients were women. Preoperative best corrected visual acuity (BCVA) was 0.20 (SD 0.14, range 0.1-0.3) in eyes with primary IOL implantation and 0.53 (SD 0.12, range 0.3-0.7) in secondary implantation. Astigmatism was 1.4 D (SD 1.19, range 0.25 to 5.0 D). Postoperatively, transient corneal edema developed in 6 eyes (30%) and transient IOP elevation in 2 eyes (10%). BCVA was 0.69 (SD 0.15, range 0.4-0.9), astigmatism was 0.84 D (SD 0.80, range 0.25 to 3.0 D), both p < 0.01. Spherical refractive error was -0.38 D (SD 0.47, range +0.75 to -1.25 D). Cystoid macular edema was observed in 2 eyes (10%). No IOL decentration was observed on biomicroscopy in any eye with undilated pupil; IOL decentration with no effect on vision was observed in 3 eyes (15%) after pupil dilation. No IOL tilt, retinal detachment, suture exposure, or endophthalmitis was observed. INTERPRETATION: Scleral fixation of foldable IOLs may be preferred in eyes with insufficient zonular and capsular support. This technique reduces surgery time and complications, and it provides early visual rehabilitation.  相似文献   

15.
观察由各种原因导致的非正常晶状体眼因无足够后囊膜支撑而施行人工晶状体悬吊术的疗效。 方法:使用美国ALCON公司CZ70BD悬吊式人工晶状体对8例9眼非正常晶状体白内障患者(过熟期白内障3眼,外伤性白内障伴晶状体半脱位4眼,马凡氏综合征2眼)因术中无后囊膜支撑施行人工晶状体悬吊术;对8例8眼Ⅰ期白内障术后非正常晶状体眼患者(伴有瞳孔异常的无晶状体眼7眼,人工晶状体严重偏位1眼)施行Ⅱ期人工晶状体悬吊术,观察其术中、术后并发症及术后视力情况。随访1~6mo。 结果:术中或术后5眼(29%)出现前房或玻璃体少量出血,10d左右基本吸收;术后1眼(6%)发生脉络膜脱离,1mo恢复;切口微漏致低眼压2眼(12%),加压包扎5d恢复。术后1d,裸眼视力>0.1者13眼(76%);术后10d,裸眼视力>0.1者17眼(100%),术后10,30d,裸眼视力>0.3者分别为11眼(65%)和12眼(71%)。 结论:人工晶状体悬吊术是治疗易发生无后囊膜支撑的非正常晶状体眼的一种较好的选择。  相似文献   

16.
The aim of this study is to compare complication rates in two different operative techniques applied for the secondary, posterior chamber intraocular lens (PCIOL) implantation with sulcus fixation. 179 eyes with partial or no posterior capsule support underwent surgery. Applied techniques were: transscleral fixation of the IOL by passing with the fixation needle through the sulcus from the inside (70 eyes) or from the outside (109 eyes) of the bulbus. The most frequent intraoperative complications were haemorrhages and vitreous prolaps with no significant difference between used techniques. In the ‘from the inside’ group, following late postoperative complications developed: astigmatism of >4D (24%), cystoid macular oedema (20%), pupil distortion (14%), partial posterior capsule opacification (10%), suture exposure (10%), IOL decentration (8%) and hemophthalmus (3%). In the ‘from the outside’ group same complications showed a decreased rate: 17%, 16%, 8%, 8%, 9%, 5% and 1%, respectively. Other late complications like high intraocular pressure, synechiae and uveitis were adequately represented in both techniques. After 24 months follow-up, best corrected visual acuity ≥0.8 was achieved in 48.5% of eyes when ‘from the inside’ and in 57.7% of eyes when ‘from the outside’ technique was used.  相似文献   

17.
BACKGROUND AND OBJECTIVE: To evaluate the visual outcome and complications of transsclerally fixated intraocular lenses (IOLs) in children without sufficient capsular support. PATIENTS AND METHODS: Twenty-one aphakic eyes of 18 children (13 boys and 5 girls) who underwent secondary transscleral IOL fixation were evaluated retrospectively. Ten eyes with aphakia after infantile cataract surgery, 7 aphakic eyes following traumatic cataract surgery, and 4 eyes after ectopia lentis surgery received secondary transscleral posterior chamber IOL fixation because of by insufficient posterior capsular support. Visual outcomes and postoperative complications were recorded. RESULTS: After a mean follow up of 22.5 months (range, 12 to 36 months), visual improvement of more than 2 Snellen lines was observed in 9 eyes (42.8 %). Preoperative visual acuity could not be assessed in 7 eyes (33.3%) because of associated neurological and developmental disorders. One eye (4.7%) lost 2 Snellen lines of the best corrected visual acuity because of concurrent endophthalmitis and retinal detachment. Pupillary distortion, transient pupillary membrane, pupillary capture as well as strabismus and anterior uveitis, were the most common complications. Endophthalmitis and retinal detachment were the most severe postoperative complications. CONCLUSION: Transsclerally fixated IOL implantation may be visually rewarding in well selected pediatric cases, but the potential complications would suggest extreme caution in its consideration. Until long-term studies are published, it is difficult to recommend implantation unless it is deemed impossible to provide adequate rehabilitation by other means such as contact lenses or aphakic spectacles.  相似文献   

18.
目的评价无后囊无晶状体眼行前部玻璃体切除联合巩膜缝线固定后房型折叠式人工晶状体的临床疗效。方法选用AMOZ900折叠人工晶状体,对无后囊或后囊破损严重不足以支撑人工晶状体者36例(36眼)行前部玻璃体切除联合人工晶状体缝线固定术,观察其术中、术后并发症及术后视力、角膜曲率、眼压的情况。结果术中无明显并发症,术后眼压升高2眼,玻璃体少量积血1眼,黄斑水肿2眼,无其他严重并发症。术后第1天的裸眼视力0.3以上者占41.67%,术后1周、1个月、3个月裸眼视力0.3以上者分为47.22%,80.56%和86.11%。结论前部玻璃体切除联合巩膜缝线固定后房型折叠式人工晶状体植入术是治疗无后囊支撑眼的较好选择。  相似文献   

19.
Clinical aspects, follow-up and results of cataract extraction in uveitis]   总被引:1,自引:0,他引:1  
Over a 5-year period, a consecutive series of 52 eyes in 46 patients with uveitis underwent extracapsular cataract extraction. Twenty-eight of these cases received a posterior chamber intraocular lens (IOL). During an average follow-up of 25 months (range 7 to 58 months) 71% of eyes receiving an IOL achieved postoperatively a visual acuity of 0.5 or better; 54% of aphakic eyes reached this level. Persistent cystoid macular edema limited the visual improvement to 20/200 in 6 patients; none of the patients developed cystoid macular edema postoperatively on clinical observation. Intraocular hypertension occurred postoperatively in 12 eyes, but was limited to a 4-week postoperative period in 9 cases. YAG laser capsulotomy was performed in 2 eyes with opacification of the posterior lens capsule without any further complications. The results suggest that uveitis patients benefit from cataract extraction and in selected cases can tolerate IOL implantation without major complications.  相似文献   

20.
BACKGROUND AND OBJECTIVE: To evaluate the effectiveness and results of pars plana vitreolensectomy approach with transscleral fixation of intraocular lens in hereditary lens subluxations. METHODS: Fifteen eyes of 9 consecutive patients with a mean age of 12.8+/-6.2 years (6-26 years) with hereditary lens subluxation were operated on and the results were evaluated in a prospective study. Surgery was considered if best spectacle corrected visual acuity (BSCVA) was less than 20/70. All eyes underwent a 2-port pars plana vitreolensectomy and transscleral fixation of an intraocular lens (IOL). RESULTS: The mean follow-up period was 12.6+/-7.5 months (6-22 months). There was no major intraoperative complication. Preoperatively, 8 eyes (53.3%) had a BSCVA of counting fingers (CF) and 7 eyes (46.6%) had a BSCVA of 20/200 to 20/70. Postoperatively, 14 eyes (93.3%) had a BSCVA of 20/50 or better. None of the patients had IOL decentration or intraocular pressure (IOP) increase during the follow-up period. There was a macular hole formation in 1 eye postoperatively. CONCLUSIONS: The early results of pars plana vitreolensectomy with IOL implantation using scleral fixation technique had shown that it not only promises a rapid visual rehabilitation but it is also a relatively safe method. More serious complications, however, may occur in the long term.  相似文献   

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