Trabeculectomy with mitomycin C for post-keratoplasty glaucoma

AIM: To investigate the effect of trabeculectomy with and without mitomycin C in post-keratoplasty glaucoma. METHODS: A retrospective study was performed on patients who underwent trabeculectomy for glaucoma after penetrating keratoplasty. 34 eyes of 32 patients were included in this study. 26 eyes received trabeculectomy with mitomycin C and eight eyes without mitomycin C. The procedure was deemed successful if the intraocular pressure was maintained below 21 mm Hg with or without use of additional antiglaucoma medication (mean follow up time 22.3 (SD 10.3) months). RESULTS: At the last examination trabeculectomy was successful in 19 of 26 eyes (73.0%) with mitomycin C (+) and two of eight (25.0%) without (p=0.0219). When the prognosis was analysed by Kaplan-Meier curve, the mitomycin C (+) group showed a better prognosis (p=0.0182). Mean intraocular pressure and average number of glaucoma medications improved in the group with mitomycin C without severe side effects on the graft. Graft rejection after trabeculectomy was seen in two eyes in the mitomycin C group. Final graft clarity rate was 69.2% (18/26) in the mitomycin C (+) group and 37.5% (3/8) in the mitomycin C (-) group. Complications such as persistent epithelial defect, cystoid macular oedema, choroidal detachment, leakage from bleb were seen in four eyes in the mitomycin C (+) group and in one eye in the mitomycin C (-) group. CONCLUSIONS: Trabeculectomy with mitomycin C showed better results for glaucoma following keratoplasty.     

高度近视眼白内障术中Ⅰ期后囊膜连续环形撕除术

目的 探讨I期后囊膜连续环形撕除术(Posterior continuous curvilinear capsulorhexis,PCCC)对高度近视眼白内障术后后发障的预防作用.方法 对203例(211只眼)高度近视眼白内障行白内障超声乳化及人工晶状体植入术,其中70只眼术中行连续环形撕除后囊(A组),植入普通聚甲基丙烯酸甲酯(PMMA)人工晶状体;非PCCC组138只眼进一步分为普通PMMA人工晶状体组(B组)73只眼,光学部边缘直角设计的折叠人工晶状体组(C组)68只眼.B组和C组单纯行白内障超声乳化及人工晶状体植入术,保留完整后囊膜.所有患眼术后随访2年以上,观察术后后发障、视网膜脱离等并发症情况. 结果 A组2只眼(2.86%)发生了后发障,B组为18只眼(24.66%),C组8只眼(11.76%),两两对比差异显著具有统计学意义(P＜0.05);A组和C组无视网膜脱离发生,B组仅1只眼发生视网膜脱离. 结论 I期后囊膜连续环形撕除术安全有效,明显减少了高度近视眼白内障术后后发障的发生.     

环形硅胶管联合丝裂霉素C治疗上泪道阻塞

目的:探讨泪道置环形硅胶管联合丝裂霉素C治疗上泪道阻塞的疗效。方法:选择在门诊治疗的上泪道阻塞89例116眼:泪点阻塞14眼、泪小管阻塞38眼、泪总管阻塞64眼。随机分成两组,对照组(A组)44例58眼:泪点阻塞6眼、泪小管阻塞20眼、泪总管阻塞32眼,观察组(B组)45例58眼:泪点阻塞8眼、泪小管阻塞18眼、泪总管阻塞32眼。材料选用硅胶泪小管,自编扩泪小管绳。在上下泪小管—鼻泪管置环形硅胶管,3～6mo拔管,若合并有鼻泪管阻塞,拨环形硅胶管后立即行鼻泪管逆植球头硅胶管术。B组与A组不同的是,将浸有0.25mg/mL丝裂霉素C的扩泪小管绳在上泪道留置3～5min,拨环形硅胶管后定期冲洗泪道。平均随访2a。结果:A组治愈率为72.4%,B组治愈率为93.1%,两组治愈率比较,差异有统计学意义(P<0.01)。结论:上泪道置环行硅胶管联合丝裂霉素C能提高手术的成功率,是治疗上泪道阻塞的较理想方法。     

Efficacy of preoperative injection versus intraoperative application of mitomycin in recurrent pterygium surgery

Purpose:

To determine the efficacy of preoperative subconjunctival injection of mitomycin C a day before surgery in the management of recurrent pterygium.

Materials and Methods:

Randomized comparative case series. Fifty eyes with recurrent pterygium were randomly divided into two groups; the mitomycin injection group (25 eyes) and the mitomycin application group (25 eyes). The mitomycin injection group underwent preoperative subconjunctival injection of mitomycin C in low dose (0.1 ml of 0.15 mg/ml) a day before bare sclera pterygium excision surgery. The mitomycin application group underwent bare sclera pterygium excision with topical application of mitomycin C (same concentration).

Results:

At one year of follow-up, 24 of 25 eyes (96%) in the mitomycin injection group and 23 of 25 (92%) eyes in the mitomycin application group were free of recurrence. The difference was statistically insignificant. As regards postoperative complications, delayed epithelization (more than two weeks) occurred in two eyes (8%) in the mitomycin injection group and in one eye (4%) in the mitomycin application group. Scleral thinning was reported in one eye (4%) in the mitomycin application group which resolved within three weeks after surgery, no other serious postoperative complications were reported.

Conclusion:

Preoperative subconjunctival injection of mitomycin C in low dose (0.1 ml of 0.15 mg/ml) a day before pterygium surgery is a simple and effective modality for management of recurrent pterygium. It has the advantage of low recurrence and complications’ rate.     

翼状胬肉的不同手术方法疗效分析

目的比较自体角膜缘干细胞移植联合丝裂霉素C,新鲜羊膜移植,及单纯性胬肉切除的临床疗效。方法将胬肉的病人83眼随机分A、B、C三组,A组26眼用单纯切除术,B组28眼用翼状胬肉切除联合新鲜羊膜移植手术,C组29眼行角膜缘干细胞移植联合丝裂霉素C应用,术后随访六月至一年,观其复发率。结果A组26眼中有8眼复发,复发率30．76％,B组28眼有5眼复发,复发17．85％,C组有2眼复发,复发率为6．89％。A组与C组比较复发率差异有统计学意义（χ2=4．32,P〈0．05）,B组与C组比较复发率差异有统计学意义（χ2=4．41,P〈0．05）。结论自体角膜缘干细胞移植联合丝裂霉素C明显有效的降低翼状胬肉术后的复发率,是比较理想的手术方法。     

准分子激光角膜上皮下磨镶术中应用丝裂霉素C预防Haze的早期临床观察

目的:探讨准分子激光角膜上皮下磨镶术中联合应用丝裂霉素C预防术后上皮下浑浊(Haze)的发生。方法:患者42例(84眼)分为A、B两组,A组右眼进行常规LASEK手术,不用丝裂霉素C;B组左眼常规LASEK手术 0.2g/L丝裂霉素C棉片于激光治疗区12～15s,术后随访6mo。结果:A组出现1级Haze18例,2级或以上Haze5例,Haze发生率55%;B组出现1级Haze7例,2级或以上Haze2例,Haze发生率21%,两组Haze发生率差异有统计学意义(P<0.001)。结论:LASEK手术中联合应用0.2g/L丝裂霉素C可降低Haze的发生率同时减轻Haze的程度,但是其更远期的疗效及副反应有待于进一步的观察。     

Filtration procedures supplemented with mitomycin C in the management of childhood glaucoma

AIMS: To evaluate the outcome of filtering procedures supplemented with mitomycin C in children with glaucoma. METHODS: All patients aged 17 or younger with glaucoma who underwent filtering surgery supplemented with mitomycin C at a tertiary care centre (n = 21) during a 5 year interval (1992 and 1996) were included. One eye for each patient was entered into the analysis. The postoperative intraocular pressure (IOP), use of antiglaucoma medications, clinical stability of glaucoma, complications, and visual acuity were retrospectively evaluated. Kaplan-Meier survival curves were used to estimate the probability of success. RESULTS: At the time of surgery mean age was 5.7 (SD 5.0) years. The most common diagnoses were trabeculodysgenesis (n = 6) and aphakic glaucoma (n = 8). Mean IOP before surgery was 35.7 (10.5) mm Hg. Average length of follow up was 18.6 (14.7) months. The probability of having IOP less than 21 mm Hg with no antiglaucoma medications and with clinically stable glaucoma 1 year after surgery was 76.9% in phakic eyes (n = 13) and 0% in aphakic eyes (n = 8). A phakic patient with Sturge-Weber's syndrome had choroidal effusion after surgery that resolved spontaneously. In the aphakic group one patient had retinal detachment and another developed an encapsulated bleb. Visual acuity deteriorated in one patient. CONCLUSION: A guarded filtration procedure with mitomycin C is relatively successful in phakic children with glaucoma, but unsuccessful in aphakic ones.     

Comparison of trabeculectomy with mitomycin C with or without phacoemulsification and lens implantation

PURPOSE: To compare the results of combined trabeculectomy with phacoemulsification and posterior chamber intraocular lens (IOL) implantation to those of trabeculectomy alone using mitomycin C (MMC) application intraoperatively in all cases. PATIENTS AND METHODS: A retrospective comparative study of consecutive patients was conducted on two groups: 102 eyes of 90 patients studied in the combined procedure group, and 33 eyes of 30 patients in the trabeculectomy alone group. RESULTS: Both groups showed a significant decrease in IOP. The combined group had a change from 21.5+/-5.8 mm HG preoperative to 14.73+/-3.44 mm HG postoperative, P=0.0001; the trabeculectomy group changed from 24.2+/-7.5 mm HG preoperative to 12.46+/-3.86 mm HG postoperative, P=0.0001. This represents a 31.5% reduction in IOP in the combined group versus a 48.5% reduction in the trabeculectomy alone group (P=0.0001). The follow-up time was longer in the trabeculectomy group (trabeculectomy group, 22.6+/-13.3 months; combined group, 14.2+/-8.0 months), P=0.0014. There were 97 eyes in the combined group (95%) and 32 eyes (97%) in the trabeculectomy group that had an IOP of less than 20 mm HG at the end of follow up. Postoperatively, the two groups showed similar significant reductions in the number of antiglaucomatous medications used (combined group, 0.82+/-1.0 compared with 2.65+/-0.84 preoperatively, P=0.0001; trabeculectomy group, 0.76+/-1.2 compared with 2.7+/-0.95 preoperatively, P=0.0001). There were no cases of bleb leakage in the combined group and two cases (6%) in the trabeculectomy group. CONCLUSION: The reduction of IOP is significantly larger after trabeculectomy alone than after the combined procedure; however, the functional and anatomical results of the combined procedure of phacoemulsification, posterior chamber IOL implantation, and trabeculectomy with MMC application were as good as those of trabeculectomy alone with MMC.     

肝素缓释系统抑制后发性白内障的实验研究

目的　探讨肝素缓释系统抑制后发性白内障发生的可行性和有效性。方法　将 30只(30只眼 )超声乳化透明晶状体吸除术后新西兰大白兔随机均分为A组 (术后生理盐水滴眼 )、B组(术中后房内植入空白缓释系统 )及C组 (术中后房内植入肝素缓释系统 )。术后 12周对 3个组兔眼进行裂隙灯显微镜、组织病理学及电镜检查 ,并检测血、房水肝素浓度和晶状体后囊膜的湿重。结果(1)术后 12周A、B及C组发生晶状体后囊膜混浊的眼数分别为 10、10及 4只眼 ,差异有非常显著意义(χ2 =14 0 9,P =0 0 0 1)。 (2 )术后 12周A、B及C组晶状体后囊膜的平均湿重分别为 (15 8± 5 )、(16 0± 9)及(2 0± 3)mg,差异有非常显著意义 (F =116 8 99,P =0 0 0 0 )。 (3)C组房水中的平均肝素浓度为 (2 6± 12 )mg/L。 (4)光镜和电镜下C组兔眼晶状体后囊膜细胞增殖不活跃 ,未发现眼内毒性反应。 (5 )术中和术后无眼内出血现象。结论　后房内植入肝素缓释系统 ,可明显提高并长期维持房水中的肝素浓度 ,有效抑制后发性白内障的发生 ;该方法毒副作用小 ,是一种安全、有效的给药方式。     

Amniotic membrane graft for primary pterygium: comparison with conjunctival autograft and topical mitomycin C treatment

AIM: To study the efficacy and safety of amniotic membrane graft as an adjunctive therapy after removal of primary pterygium, and to compare the clinical outcome with conjunctival autograft and topical mitomycin C. METHODS: 80 eyes of 71 patients with primary pterygia were treated with excision followed by amniotic membrane graft. The result was compared retrospectively with 56 eyes of 50 patients receiving conjunctival autograft, and 54 eyes of 46 patients receiving topical mitomycin C. Patients were followed for at least 6 months, and the averaged follow up periods for the three groups were 13.8, 22.8, and 18.4 months, respectively. RESULTS: There were three recurrences (3.8%) in the amniotic membrane graft group, three recurrences (5.4%) in the conjunctival autograft group, and two recurrences (3.7%) in the topical mitomycin C group. There was no significant difference in recurrence rate among the three groups (p = 0.879). No major complications occurred in the amniotic membrane graft group or the conjunctival autograft group. One case of infectious scleritis due to scleral ischaemia occurred in the topical mitomycin C group. CONCLUSION: This study showed that amniotic membrane graft was as effective as conjunctival autograft and mitomycin C in preventing pterygium recurrence, and can be considered as a preferred grafting procedure for primary pterygium.     

翼状胬肉切除联合丝裂霉素C及羊膜移植

目的:探讨翼状胬肉切除联合丝裂霉素C及羊膜移植治疗原发性翼状胬肉的疗效和安全性。方法:把89例106眼随机分成3组,分别实施单纯翼状胬肉切除(A组20例23眼)、翼状胬肉切除联合丝裂霉素C(B组29例33眼)和翼状胬肉切除联合丝裂霉素C及羊膜移植(C组40例50眼)。手术均在眼科手术显微镜下操作,术后随访观察3～12mo,观察术后复发率和并发症。结果:A组复发率为41%,B组复发率为16%,C组复发率为4%。复发率经统计学处理:3组间差异有极显著性意义(P<0.01),A组和C组、B组和C组比较差异有极显著性意义(P<0.01)。A组和B组比较无统计学差异。结论:翼状胬肉切除联合丝裂霉素C及羊膜移植能有效降低翼状胬肉的术后复发率。     

Visual axis opacification after AcrySof intraocular lens implantation in children

PURPOSE: To evaluate visual axis opacification after AcrySof intraocular lens (IOL) (Alcon) implantation in pediatric eyes. SETTING: Iladevi Cataract and IOL Research Centre, Ahmedabad, India. METHODS: This prospective study evaluated 103 consecutive eyes of 72 children with congenital cataract. Two groups were formed based on age at surgery: Group 1, younger than 2 years, and Group 2, older than 2 years. All eyes in Group 1 (n = 37) had primary posterior continuous curvilinear capsulorhexis (PCCC) with anterior vitrectomy. In Group 2 (n = 66), management of the posterior capsule was assigned randomly to no PCCC (Group 2A, n = 37) or PCCC (Group 2B, n = 29). The PCCC group was further randomized into 2 subgroups: no vitrectomy (Group 2BN, n = 14) or vitrectomy (Group 2BV, n = 15). The primary outcome measures were visual axis opacification and the resulting need for a secondary procedure. Statistical analysis was performed using SPSS for Windows (version 11.0.1). RESULTS: The mean age of the patients was 5.2 years +/- 5.0 (SD) (range 0.2 to 16.0 years) and the mean follow-up, 2.3 +/- 0.9 years (range 1.0 to 4.0 years). Overall, 41 eyes (39.8%) developed visual axis opacification and 14 (13.6%) required secondary intervention. In Group 1, 4 eyes (10.8%) developed visual axis opacification and 3 (8.1%) had a secondary pars plana vitrectomy. In Group 2A, 31 eyes (83.8%) developed posterior capsule opacification (PCO) and 10 eyes (27.7%) had secondary intervention. Children 8 years or younger at the time of surgery developed significantly greater PCO than older children (P =.01). Five eyes (37.5%) in Group 2BN had opacification of the anterior vitreous face, 1 of which required a secondary procedure. One eye (6.7%) in Group 2BV had visual axis opacification that did not require a secondary procedure. CONCLUSIONS: AcrySof IOL implantation with appropriate management of the posterior capsule maintained a clear visual axis in 60.2% of eyes. Of the 39.8% of eyes with visual axis opacification, 13.6% had visually significant opacification and required a secondary procedure.     

Trabeculectomy with mitomycin C versus trabeculectomy alone for juvenile primary open-angle glaucoma

PURPOSE: We compare the intermediate-term outcome of initial trabeculectomy with adjunctive mitomycin C use versus initial trabeculectomy alone for juvenile primary open-angle glaucoma. METHODS: This retrospective consecutive analysis included 44 eyes from 36 patients with juvenile primary-open angle glaucoma, all of whom underwent either initial trabeculectomy with adjunctive mitomycin C use (15 eyes) or initial trabeculectomy alone without mitomycin C use (29 eyes). We compared the success rate and complications between the two groups in a three-year follow-up period following surgery. RESULTS: Three years subsequent to surgery, the cumulative success probability was 73% for the mitomycin C group and 68% for the control group, there being no real difference between the two groups (p = 0.89). A greater incidence of hypotony maculopathy was found amongst the mitomycin C group than was the case for the control group (20 versus 0%, respectively, p = 0.034). A lower intraocular pressure amongst the mitomycin C group was noted as compared with the control group (10.8 +/- 3.0 versus 13.3 +/- 3.8 mm Hg, respectively, p = 0.017) amongst the successfully treated patients. CONCLUSIONS: Despite the lower intraocular pressure level for the successfully treated patients from the trabeculectomy with mitomycin C group, and a greater incidence of resultant hypotony maculopathy for this group as compared with the trabeculectomy alone group, there appeared to be no significant difference in the cumulative success probability for this group as compared with the trabeculectomy alone group. Therefore, we caution against the use of an initial trabeculectomy with mitomycin C for juvenile primary open-angle glaucoma.     

Refractive lens exchange with an array multifocal intraocular lens

PURPOSE: To prospectively evaluate safety, efficacy, predictability, stability, complications, and patient satisfaction after refractive lens exchange (clear lens extraction) followed by posterior chamber implantation of a multifocal intraocular lens (IOL). METHODS: Fifty eyes of 25 patients (mean age 51 years, range 44 to 62 years) with preoperative spherical equivalent refraction between -15.50 and +5.75 D and cylinder between 0 and 1.50 D underwent bilateral implantation of a zonal progressive multifocal IOL (Array, AMO). RESULTS: Eyes were divided into group A (n=24; myopia, average preoperative spherical equivalent refraction -7.11 +/- 3.25 D (-1.75 to -15.50 D), and group B (n=26; hyperopia, average preoperative spherical equivalent refraction +3.04 +/- 1.04 D). Follow-up was 6 months in all eyes. Postoperatively, all eyes of both groups were within +/-1.00 D of target refraction. No eye in group A and three eyes in group B sustained a loss of one line of BSCVA. Forty-seven eyes (94%) remained unchanged or gained one or more lines of their preoperative BSCVA. In all eyes, postoperative UCVA was 20/40 or better. When compared to preoperative, uncorrected near visual acuity improved (statistically significant). All patients achieved uncorrected binocular visual acuity of 20/30 and J4 or better. Patient satisfaction was extremely high; no intra- or postoperative complications were reported. CONCLUSION: Six-month results of implantation of the AMO Array multifocal IOL for refractive lens exchange demonstrated safety, efficacy, and predictability in correcting high ametropia and significant improvement of uncorrected near and distance visual acuity.     

Effects of topical mitomycin C on primary trabeculectomies and combined procedures.

The charts were reviewed of all patients who underwent primary trabeculectomies (group 1) or combined procedures (phacoemulsification + intraocular lens implantation + trabeculectomy--group 2) and received intraoperative mitomycin C (0.4 mg/ml) between 1991 and 1992 at Wills Eye Hospital. A total of 54 eyes of 54 patients were included: 39 in group 1 and 15 in group 2. Intraocular pressure was controlled successfully in 97.4% of eyes in group 1 (mean follow up 6.7 months), and in 93.3% in group 2 (mean follow up 6.8 months). Main complications included choroidal detachment (n = 15), shallow anterior chamber (n = 9), cataract formation (n = 8), and hypotony maculopathy (n = 3). The use of mitomycin C in primary trabeculectomies and combined procedures is associated with high success rates. However, it may be associated with unacceptable risks of vision threatening complications related to excessive filtration.     

Results of intraoperative mitomycin C application in dacryocystorhinostomy

AIMS: To evaluate the long term results of intraoperative mitomycin C application in dacryocystorhinostomy (DCR) surgery compared with results of the conventional procedure. METHODS: In this prospective randomised controlled study, a total of 88 eyes diagnosed with acquired nasolacrimal duct obstruction were randomly divided into a conventional DCR group and a mitomycin C group in which mitomycin C was used during DCR surgery. The surgical procedures in both groups were exactly the same, except that in the patients in the mitomycin C group, a piece of neurosurgical cottonoid soaked with 0.2 mg/ml mitomycin C was applied to the osteotomy site for 30 minutes. The results of the DCR surgeries were evaluated by objective findings such as irrigation and the height of tear meniscus and subjective symptoms by asking patients the condition of tearing improvement. RESULTS: Among the 44 eyes in the mitomycin C group, 95.5% of patients remained totally symptom free after 10 months of follow up; while in the conventional group, 70.5% of patients were reported to be symptom free and 18% of patients to have an improvement in their symptoms. There was a significant difference between these two groups. As far as objective findings were concerned, there were 41 eyes in the mitomycin C group classified as having a normal and one eye with moderate tear meniscus level, compared with 32 eyes and seven eyes, respectively, in the conventional group. There was also a significant difference between these two groups. The non-patency rate in the mitomycin C group is 4.5% compared with 11.4% in the conventional group. There were no complications such as abnormal nasal bleeding, mucosal necrosis, or infection except one patient with delayed wound healing. CONCLUSIONS: Intraoperative mitomycin C application is effective in increasing the success rate of DCR surgery in standard nasolacrimal duct obstruction, and no significant complications resulted from its use.     

定量滤过性小梁切除术

目的：探讨定量滤过性小梁切除术的方法及疗效。方法：将145例（180只眼）原发性青光眼随机分为A、B、C组，每组均为60只眼，A组行小梁切除联合调整缝线；B组行小梁切除联合MMC；C组行小梁切除联合MMC及调整缝线，观察术后眼压，视力，滤过泡，眼底等。结果：随访1年，手术成功率A组为81．7％，B组为93．3％，C组为96．7％，B、C两组与A组对比有显著差异。低眼压，浅前房，脉络膜脱离，黄斑水肿，视力下降等并发症，A、C两组较B组显著减少，结论：C组方法既能抑制瘢痕化又可避免术后早期超滤过引起的并发症，可定量改善滤过。     

Comparison of long-term incidence of posterior capsular opacification between phacoemulsification and phacotrabeculectomy.

PURPOSE: To investigate the long-term incidence of posterior capsular opacification after phacoemulsification compared with phacotrabeculectomy with or without adjunctive subconjunctival mitomycin C. METHODS: This was a retrospectively conducted long-term, observational, case-control study. One hundred eyes of 100 cataract patients who underwent phacoemulsification and posterior chamber intraocular lens implantation and 100 eyes of 100 primary open-angle glaucoma patients with cataract that underwent phacotrabeculectomy and posterior chamber intraocular lens implantation, matched with respect to age, intraocular lens type, prevalence of diabetes mellitus, and length of follow-up. The main outcome measure was the rate of clinically significant posterior capsular opacification as determined by slit-lamp biomicroscopy and necessity to perform neodynium:yttrium aluminum garnet (Nd:YAG) capsulotomy and as calculated by Kaplan-Meier survival analysis. Postoperative visual acuity and maintenance of intraocular pressure control were also measured. RESULTS: There was no significant difference in the rate of posterior capsular opacification requiring Nd:YAG capsulotomy between the phacoemulsification and phacotrabeculectomy groups (P =.77). However, a significant difference in the rate of posterior capsular opacification was found between those patients without diabetes mellitus and those with a preoperative diagnosis of diabetes mellitus (P =.016). Also, survival analysis comparing use of mitomycin C with no use of mitomycin C in the phacotrabeculectomy group showed a higher survival in the mitomycin C subgroup (P =.03). CONCLUSION: There was no significant difference in long-term posterior capsular opacification between phacoemulsification and phacotrabeculectomy in the study population. Intraoperative, adjunctive use of mitomycin C in the phacotrabeculectomy group and the presence of diabetes mellitus in the overall patients were beneficial (protective) factors against posterior capsular opacification.     

丝裂霉素C联合20％乙醇分离翼状胬肉切除术的临床观察

目的研究20％乙醇联合丝裂霉素C翼状胬肉切除术的疗效。方法翼状胬肉患者82例（88眼）,随机分组后分别行20％乙醇分离联合丝裂霉素C翼状胬肉切除术（A组43例,47眼）和显微切除联合丝裂霉素C翼状胬肉切除术（B组39例,41眼）。结果术后A、B组角膜创面平均上皮修复时间分别为2．55d和4．90d,差异有统计学意义（P〈0．01）。A组角膜创面光滑透明,泪膜形成良好,结膜平整,平均随访8个月,44眼治愈,2眼结膜增厚复发,1眼并发结膜囊肿。B组36眼治愈（87．80％）,5眼复发,差异有统计学意义（P〈0．05）。结论丝裂霉素C联合20％乙醇翼状胬肉切除术创伤少、并发症少、复发率低、安全性高,不破坏眼部正常生理功能,能恢复正常、健康眼表结构,是治疗翼状胬肉的新方法。     

Long-term effects of simultaneous subconjunctival and subscleral mitomycin C application in repeat trabeculectomy

PURPOSE: To assess the efficacy and safety of simultaneous mitomycin C application under conjunctival and scleral flaps in patients with repeat trabeculectomy. METHODS: A total of 44 patients (44 eyes) with previous failed filtering surgery were randomized to one of two groups. The both-flaps group comprised 22 patients (22 eyes) with trabeculectomy and intraoperative mitomycin C application under conjunctival and scleral flaps, whereas the subconjunctival group comprised 22 patients (22 eyes) with subconjunctival application of mitomycin C. Particular attention was paid to intraocular pressure, postoperative medications, visual acuity, filtering bleb appearance, and complications. The mean follow-up time was 38.18 +/- 12.48 months. RESULTS: The mean preoperative intraocular pressure decreased from 39.1 +/- 7.3 mm Hg to the postoperative level of 15.6 +/- 4.8 mm Hg in the both-flaps group (P = 0.014), and from 39.4 +/- 8.4 to 18.7 +/- 5.8 mm Hg in the subconjunctival group (P = 0.018). There was a statistically significant difference in intraocular pressure at all follow-up times, except at 1 week and 1 month postoperatively. Kaplan-Meier survival analysis showed there was no significant difference in total success rate (complete plus qualified success) between the two groups (P = 0.622, log-rank test). However, the two survival curves for the complete success subgroups (without additional medications) confirmed that mitomycin C applications under both flaps had a higher success rate than subconjunctival application (P = 0.043, log-rank test). No statistically significant difference in medications was present between the two groups, and no severe complications developed in either group. CONCLUSIONS: Trabeculectomy augmented with mitomycin C application at both sites could produce a greater lowering of intraocular pressure with low incidence of postoperative complications, and could provide an increased chance of long-term success. The procedure is effective and safe in patients with repeat trabeculectomy.