Evaluation of the recurrence rate and complications for pterygium treated with limbal conjunctival autograft

AIM: To evaluate the safety and efficacy of limbal conjunctival autograft transplantation for treating primary pterygium over a period of 3y. METHODS: Prospective observational consecutive case series. In this study, 264 eyes of 264 patients (142 males and 122 females) with nasal primary pterygium were treated using the technique of limbal conjunctival autograft. The mean ages of the patients were 54.22±15.24y. After excision of the pterygium patients were followed up on 1, 3, 7d and at 1, 3, 6, 9, 12, and 36mo. Recurrence of pterygium, complications, operation time and corneal epithelialization time were evaluated. RESULTS: The average surgery time was 25.7±2.6min. With a minimum 3-year of follow-up, postoperative corneal epithelialization was completed in 3.85±0.72d. Complications were observed in 14 cases. Vision-threating complications such as iritis, scleral thinning symblepharon or ulceration were not detected in the study. Five eyes with graft edema, 3 eyes with granuloma formation and 6 cases with a subconjunctival hematoma in the nasal conjunctiva. By the end of 3-year follow-up, recurrence was detected in 11 cases. The recurrence rate was 4.17%, and the onset of recurrence was 3mo, the average recurrence time was 8mo. CONCLUSION: There were no severe complications and few recurrences when limbal conjunctival autograft transplantation was performed after long-term follow-up, we suggest that limbal conjunctival autograft transplantation is a safe and effective technique in primary pterygium. We also recommend that 12-month follow-up is optimal on primary pterygium surgery.     

翼状胬肉切除联合自体球结膜或干细胞移植疗效的Meta分析

目的：探究翼状胬肉切除联合自体球结膜移植(CAG)或干细胞移植(LCAG)的疗效对比分析。

方法：系统性检索美国国立图书馆医学文献检索系统(PubMed)、荷兰医学文摘数据库(EMBASE)、科克伦图书馆(The Cochrane Library)、美国临床试验注册中心(The US trial registry),从建库起至2021-09所有的文献。对复发率、角膜上皮愈合时间、基础泪液分泌试验(SⅠt)和泪膜破裂时间(BUT)进行分析。应用Review Manager 5.3进行统计学分析,计数资料以相对危险度(RR)、计量资料以标准化均数差(SMD)及其95%可信区间(CI)表示。

结果：共计纳入15项研究,接受手术眼数共1 883眼,其中897眼行LCAG术,986眼行CAG术。在复发率方面,LCAG组显著低于CAG组(RR=0.33,95%CI：0.15～0.71,P=0.004); 在角膜上皮愈合时间方面,LCAG组显著短于CAG组(SMD=-0.87,95%CI：-1.64～-0.11,P=0.02); 在SⅠt方面,两组结果变化值相近(SMD=0.03,95%CI：-0.33～0.40,P=0.86); 在BUT方面,LCAG组较CAG组显著延长(SMD=0.40,95%CI：0.09～0.70,P=0.01)。

结论：翼状胬肉切除联合LCAG较CAG的术后复发率更低,角膜上皮愈合更快,泪膜稳定性更好。     

自体角膜缘与结膜移植治疗复发性翼状胬肉

目的比较自体角膜缘与结膜移植治疗复发性翼状胬肉的疗效。方法复发性翼状胬肉病人９４例（１１５眼）随机分为Ａ,Ｂ两组,Ａ组４７例（５６眼）,Ｂ组４７例（５９眼）。手术显微镜下切除胬肉后Ａ组行自体角膜缘移植术,Ｂ组行自体球结膜移植术。观察术后植片生长、角膜创面修复、角膜新生血管及胬肉复发率。结果术后植片成活时间３～５天（平均３．７５天）;术后角膜创面修复时间Ａ组较Ｂ组快（Ｐ＜０．０５）。角膜新生血管Ａ组较Ｂ组少。术后１２个月胬肉复发率Ａ组（３．８％）较Ｂ组（２５．９％）低（Ｐ＜０．０１）。结论治疗复发性翼状胬肉自体角膜缘移植较结膜移植疗效好。     

自体角膜缘干细胞移植术治疗复发性翼状胬肉疗效观察

目的:观察自体角膜缘干细胞移植术治疗复发性翼状胬肉疗效。方法:把66例81眼复发性翼状胬肉患者随机分为两组,治疗组:34例44眼行翼状胬肉切除联合自体角膜缘干细胞移植术;对照组:32例37眼行翼状胬肉切除联合带蒂结膜瓣转移术。胬肉复发的定义:血管纤维组织重新侵入角膜。结果:术后随访12~24mo。治疗组治愈率98%,复发率2%;对照组治愈率84%,复发率16%。两组复发率有统计学意义(χ2=4.62,P<0.05),两组均无明显并发症。结论:自体角膜缘干细胞移植术治疗复发性翼状胬肉疗效高,复发率低于带蒂结膜瓣转移术。     

Amniotic membrane transplantation with conjunctival autograft for recurrent pterygium

OBJECTIVE: To study the effect of amniotic membrane transplantation (AMT) combined with either limbal autograft transplantation (LAT) or conjunctival autograft transplantation (CAT) in recurrent pterygium. DESIGN: Retrospective, noncomparative, interventional case series. PARTICIPANTS: Twenty-seven eyes of 27 patients with recurrent pterygium. The mean number of prior surgeries was 3.1 (range, 1-10). Fifteen eyes each had restriction of ocular movement and symblepharon before surgery. INTERVENTION: Patients were treated by AMT with either LAT (n = 15) or CAT (n = 12). MAIN OUTCOME MEASURES: Recurrence of pterygium, improvement in ocular movement, and symblepharon formation. RESULTS: Twenty-three (85.2%) of 27 eyes showed no recurrence with a mean observation period of 67.0 weeks. Fourteen eyes (93.3%) each showed improvement in ocular movement restriction and symblepharon after AMT. In four eyes that developed recurrence, three had LAT and one had CAT combined with AMT, suggesting that there was no difference in surgical outcome between LAT and CAT. CONCLUSIONS: AMT with CAT is a safe and effective method for recurrent pterygium, especially that associated with ocular movement restriction and symblepharon. Considering the potential adverse effects associated with limbal excision, AMT plus CAT may be preferred over AMT plus LAT.     

改良式角膜缘干细胞移植治疗原发性翼状胬肉的手术体会

目的:探讨原发性翼状胬肉的手术治疗术式及疗效。方法:回顾2006-08/2009-01,对收住我院的原发性翼状胬肉患者40例43眼,均行改良式角膜缘干细胞移植术,术后观察角膜上皮恢复情况、结膜伤口愈合情况和胬肉复发情况等。结果:本组病例术后随访1～30mo,绝大多数患者角膜上皮和结膜伤口愈合良好,有4例患者术后复发。结论:改良式角膜缘干细胞移植术治疗原发性翼状胬肉复发率低,可以广泛开展,但需要手术者娴熟的技术和足够的耐心。     

Mitomycin C and conjunctival autograft for recurrent pterygium

Purpose To observe the efficiency of intraoperative low-dose Mitomycin-C combined with conjunctival autograft in the treatment of recurrent pterygium. Methods Fifteen eyes with recurrent pterygium were included in this study. The mean age of the patients was 51.6 ± 11.4 (9 men, 6 women). All patients underwent excision of the pterygium tissue and subconjunctival fibrous tissue with a no cautery approach. 0.2 mg/ml Mitomycin-C (0.02%) was applied for 3 min. Conjunctival autograft was obtained from the superotemporal bulbar conjunctiva of the same eye. Eyes were followed for a mean period of 21.0 ± 9.1 months. Results Recurrence was seen in two eyes (13.3%) during the follow-up period. The only complication seen was graft edema (two eyes; 13.3%) which healed after pressure patching. Graft necrosis, scleral melting or failure of revascularization was not noted. Conclusion Intraoperative application of 0.2 mg/ml Mitomycin-C combined with conjunctival autograft reduces recurrence in recurrent pterygium cases, with minimal complications.     

羊膜移植和自体球结膜移植治疗翼状胬肉临床对比观察

目的　观察羊膜移植和自体球结膜移植治疗翼状胬肉后角膜上皮愈合的速度 ,比较 2种治疗方法的预后。方法　翼状胬肉患者 4 0例 4 9眼 ,17眼行胬肉切除、羊膜移植术 ,3 2眼行胬肉切除、自体球结膜移植术。术后分别观察角膜上皮愈合速度 ,并随访观察 6～ 2 4个月 ,了解有无复发。结果　羊膜移植组术后角膜上皮愈合速度为 (58.4 69± 16.871) μm· h- 1,显著快于自体球结膜移植组 (49.3 70± 12 .780 )μm· h- 1(P <0 .0 5)。随访观察 ,羊膜移植组术后无复发 ,自体球结膜移植组 5例复发 (15.63 % )。结论　羊膜移植治疗翼状胬肉术后角膜上皮愈合快 ,复发率低 ,近期和远期效果均优于自体球结膜移植 ,可能为胬肉治疗中预防复发的更为有效的术式。     

Femtosecond laser-assisted conjunctival autograft preparation for pterygium surgery

Purpose

Pterygium is a common ocular surface disorder. Conjunctival autografting (CAG) following pterygium resection is the gold standard treatment. CAGs without Tenon's tissue provide better results but are more technically difficult to achieve. In this study, we evaluated the feasibility and reproducibility of femtosecond laser (FSL)-assisted CAG preparation.

Preliminary results of the pterygium excision technic with conjunctival autograft

14 eyes with a pterygium, including one eye from which a pterygium had previously been removed by a simple excision, underwent a conjunctival autograft. During an average follow-up of 13 months, we observed a recurrence in 5 eyes (35%). The visual acuity stayed unchanged in 10 eyes, worsened in 1 eye and improved in 3 eyes. The corneal astigmatism measured with a Javal keratometer showed a modification in 12 eyes. This method should not be used as a standard primary surgery for pterygium in view of the high recurrence rate observed.     

两种方法治疗原发性翼状胬肉的疗效观察

目的：比较自体结膜瓣移植术( conjunctival autograft transplant, CAT )和角膜缘干细胞移植术( limbal conjunctival autograft transplant, LCAT)治疗原发性翼状胬肉的临床效果。
　　方法：前瞻性、随机、对照病例研究。收集2014-01/2015-01在解放军第四七四医院诊断为原发性翼状胬肉患者共120例120眼,依次纳入本研究,奇数者行 CAT,偶数者行LCAT。
　　结果：术后随访1a,完成随访107例107眼,CAT 组患者54例54眼,术后复发4眼,复发率7.4%;LCAT 组患者53例53眼,术后复发2眼,复发率3.8%。两组间复发率无统计学意义(P=0.678)。
　　结论：CAT 组和 LCAT 组均能有效治疗原发性翼状胬肉,降低术后翼状胬肉复发率,但 LCAT 是治疗原发性翼状胬肉的最优术式。     

自体结膜瓣移植术和角膜缘干细胞移植术对原发性翼状胬肉术后泪膜的影响

目的：比较自体结膜瓣移植术(CAT)和角膜缘干细胞移植术(LCAT)对原发性翼状胬肉患者术后泪膜的影响。

方法：前瞻性研究。收集2018-09/2019-05在新疆军区总医院北京路医疗区眼科诊断为原发性翼状胬肉患者共150例150眼,依次纳入本研究,奇数者行CAT,偶数者行LCAT,术前,术后1、3、6mo,1a完成泪膜破裂时间(TBUT)、SchirmerⅠ试验(SⅠt)和眼表疾病指数(OSDI),结果进行统计学分析。

结果：患者129例129眼完成术后1a随访,CAT组64例64眼,复发4眼(6.2%); LCAT组65例65眼,复发3眼(4.6%),两组复发率无差异(P=0.718)。CAT组和LCAT组TBUT、SⅠt和OSDI评分术前和术后1、3、6mo,1a均有差异(P<0.05),术后1mo和术后3、6mo,1a均有差异(P<0.05),术后3、6mo和术后1a均无差异(P>0.05)。CAT组和LCAT组不同时间点TBUT、SⅠt和OSDI评分均无差异(P>0.05)。

结论：CAT和LCAT均能有效治疗原发性翼状胬肉,术后复发率低且相近,两种手术方式改善原发性翼状胬肉术后泪膜功能的程度相近。     

Sutureless amniotic membrane transplantation combined with narrow-strip conjunctival autograft for pterygium

To study the efficacy and safety of sutureless amniotic membrane transplantation combined with narrow-strip conjunctival autograft and to investigate the clinical outcomes. Thirty eyes of 30 patients with primary pterygia were treated in this institutional study with excision followed by sutureless amniotic membrane transplantation combined with narrow-strip conjunctival autograft using fibrin glue tissue adhesive. The main outcome measures were the operating time for ocular surface reconstruction, the size of the pterygium and of the conjunctival autograft, postoperative complications, subjective complaints, and recurrences. The mean pterygium size was 3.12 ± 0.92 mm and the mean operating time was 4.58 ± 1.10 min. Twenty-nine patients (96.7%) had no complaints after first postoperative week. Twenty-eight (93.3%) patients had no recurrences after 1 year follow-up. The sutureless amniotic membrane transplantation combined with narrow-strip conjunctival autograft is an effective procedure with low rate of recurrence. This technique can be considered as a preferred grafting procedure for primary pterygium but further randomized controlled studies including larger populations are needed.