角膜缘干细胞移植术与结膜移植术治疗外伤后假性胬肉及复发性胬肉疗效的比较

目的 角膜缘干细胞移植术与结膜移植术治疗眼外伤后的假性胬肉及复发性胬肉的疗效比较,寻找低复发率的治疗方法。方法 40例(47眼)眼外伤后的假性胬肉及复发性胬肉,分别进行胬肉切除加自体(或异体)结膜移植或角膜缘干细胞移植术,术后观察两组的泪膜破裂时间(BUT)、角膜上皮修复时间及复发率。结果 角膜缘干细胞移植术的复发率为(11.11％),明显低于结膜移植术(30.00％),BUT恢复快,两组间比较差异有显著性(P<0.05);但比较角膜上皮修复时间其差异无显著性(P>0.05)。结论 对眼外伤后的假性胬肉及复发性胬肉,角膜缘干细胞移植术后BUT恢复快,且复发率低且疗效优于结膜移植。     

带结膜瓣角膜缘干细胞移植术治疗翼状胬肉疗效分析

目的观察带结膜瓣角膜缘干细胞移植术治疗翼状胬肉的疗效。方法用回顾性分析方法研究该院自2006年4月～2009年9月91例(102眼)翼状胬肉患者,依照采取不同手术方式分为两组:A组翼状胬肉单纯切除术34眼(均为原发);B组带结膜瓣角膜缘干细胞移植术68眼(57例共68眼,双眼11例,65眼原发,3眼复发)。所有患者术后随访为3～12月。术后观察结膜角膜修复情况、手术后并发症及胬肉复发情况,评价其疗效。统计学分析两组手术方法的效果差异。结果两组手术方法的术后复发率比较:翼状胬肉单纯切除术组4眼复发,复发率为11.76%;带结膜瓣角膜缘干细胞移植术治疗翼状胬肉术组无复发,复发率为0。两组均没有严重威胁到手术患者的视功能的并发症。结论两组手术方法的结果比较表明,带结膜瓣角膜缘干细胞移植术治疗翼状胬肉组较翼状胬肉单纯切除术组复发率低。     

角膜缘干细胞移植治疗非洲复发性翼状胬肉的临床疗效观察

目的探讨结膜瓣角膜缘干细胞移植在治疗非洲黑人复发性翼状胬肉的临床疗效。方法对144例(160眼)非洲复发性翼状胬肉黑人患者采取手术治疗,其中A组74例(82眼)采用结膜瓣角膜缘干细胞移植治疗,B组70例(78眼)采用传统的单纯翼状胬肉切除术治疗,术后随访6～12个月,评估疗效。结果 A组74例(82眼),7眼复发,复发率为8.53%;B组70例(78眼),24眼复发,复发率为30.77%。两组复发率比较差异有统计学意义(P<0.01)。结论结膜瓣角膜缘干细胞移植术能有效降低复发性翼状胬肉的复发率,在非洲地区有推广运用价值。     

两种移植术治疗复发性翼状胬肉疗效比较

目的比较分析带结膜瓣角膜缘干细胞移植术与生物羊膜移植术对复发性翼状胬肉的疗效,探讨这两种方法中哪一种更适合基层医院开展。方法将78例(78眼)复发性翼状胬肉随机分成A、B两组。A组39例(39眼)行用带结膜瓣角膜缘干细胞移植术;B组39例(39眼)行生物羊膜移植术。术后随访36个月。结果 A组4例(4眼)翼状胬肉再次复发,复发率为10.3%;B组6例(6眼)翼状胬肉再次复发,复发率为15.4%;两组术后复发率比较差异无统计学意义(P>0.05)。结论生物羊膜移植和带结膜瓣角膜缘干细胞移植是治疗复发性翼状胬肉两种较好的方法,具有方便、修复快,术后患者自觉症状轻,复发率低等优点。但带结膜瓣角膜缘干细胞来源于自体眼表组织故不发生免疫排斥反应,可取代病变组织修复眼表,且费用低廉,更适合基层医院开展。     

Accelerated corneal collagen cross-linking for progressive keratoconus

Purpose: To evaluate the efficacy of accelerated corneal cross-linking (CXL) procedure for progressive keratoconus.

Materials and methods: Twenty-three eyes of 23 patients undergone accelerated CXL procedure were evaluated preoperatively and postoperatively at 1st, 3rd and 6th month for uncorrected distant visual acuity (UDVA), best corrected distant visual acuity (CDVA), spherical error, cylindrical error, spherical equivalent (SE), keratometric values and thinnest corneal thickness (TCT) values with corneal topography by Scheimpflug camera and endothelial cell density (ECD).

Results: The mean UDVA was improved from 0.97?±?0.41 logarithm of minimal angle of resolution (logMAR) to 0.76?±?0.45 logMAR at the 6th month after CXL (p?=?0.332). The mean CDVA was improved from 0.49?±?0.30 logMAR to 0.34?±?0.22 logMAR at the 6th month after CXL (p?=?0.026). The mean sphere was decreased from ?4.47?±?4.1 diopter (D) to ?3.79?±?3.86?D and the mean cylinder was decreased from ?5.60?±?2.2?D to ?4.55?±?1.98?D and the mean SE was decreased from ?7.22?±?4.48?D to ?6.36?±?4.34?D at the 6th month after CXL (p?=?0.128, p?=?0.002 and p?=?0.045, respectively). Flat keratometry, steep keratometry, mean keratometry and maximum keratometry were significantly reduced at the 6th month after CXL (p?=?0.025, p?p?=?0.004 and p?=?0.03, respectively). TCT and ECD were not changed significantly the 6th month after CXL (p?=?0.135 and p?=?0.082, respectively).

Conclusion: Accelerated CXL procedure was effective to stabilize progression of keratoconus with significant reduction in topographic keratometric values and significant increase in CDVA in 6 months.     

肉眼下行翼状胬肉逆行切除联合带角膜缘干细胞的结膜瓣移植术疗效观察

目的探讨肉眼下行翼状胬肉逆行切除联合带角膜缘干细胞的结膜瓣移植术的临床疗效。方法本院门诊对58例（65眼）原发性翼状胬肉患者,在肉眼下行翼状胬肉逆行切除联合带角膜缘干细胞的游离结膜瓣移植术,术后观察角膜创面愈合时间,眼部刺激症状程度及复发情况。结果术后第2天角膜创面光滑,刺激症状轻,随访6个月～2年,痊愈54眼,好转6眼,复发5眼,复发率为7.69%。结论肉眼下行翼状胬肉逆行切除联合带角膜缘干细胞的结膜瓣移植术,设备要求低,操作简单,费用低廉,术后刺激症状轻,复发率低,适合基层医院开展。     

自体角膜缘干细胞移植术治疗翼状胬肉的临床观察

目的评价自体角膜缘干细胞移植术在翼状胬肉治疗中的效果。方法翼状胬肉患者62例74眼,随机分为翼状胬肉切除联合自体角膜缘干细胞移植组A和单纯翼状胬肉切除组B,术后随访5～36个月。结果A组37眼中2眼复发,复发率为5.41%,其中复发性胬肉6眼中有1眼复发,复发率为16.67%;B组37眼中12眼复发,复发率为32.43%,其中复发性胬肉4眼中有3眼复发,复发率为75%。A组与B组比较,复发率差异有显著性。结论翼状胬肉切除联合自体角膜缘干细胞移植术简单易行,复发率低,疗效确切,是治疗原发性和复发性胬肉的有效手段。     

翼状胬肉切除联合自体角膜缘干细胞移植术的临床疗效

目的探讨翼状胬肉切除联合自体角膜缘干细胞移植术的临床疗效。方法将160例翼状胬肉患者根据治疗方法的不同分为治疗组与对照组各80例,两组均采用常规翼状胬肉切除术,治疗组在此基础上加用自体角膜缘干细胞移植术。结果治疗组的泪液分泌试验值与泪膜破裂时间分别为（9．97±0．34）mm／5min和（9．65±0．26）s,而对照组分别为（10．40±0．16）mm／5min和（10．86±0．83）s,两组间比较,差异有统计学意义（P〈0．05）;治疗组的有效率为96.3％,明显高于对照组的85．0％（P〈0．05）。结论翼状胬肉是常见的眼表疾病,采用翼状胬肉切除联合自体角膜缘干细胞移植术治疗能取得良好的效果,值得临床推广。     

Effectiveness of heparin eye drops in paraquat-induced ocular injury

Purpose: To evaluate the efficacy of heparin eye drops in the treatment of paraquat-induced ocular surface injury.

Design and methods: In this retrospective study, we included 25 patients (31 eyes) with paraquat-induced ocular surface injury, who attended the Affiliated Hospital of Weifang Medical University between October 2008 and October 2013. The patients were split into two groups according to whether or not received heparin eye drops. The clinical data were compared between the two groups, i.e. clinical histories, results of examinations, treatments and outcomes.

Results: Eleven patients (group A, 15 eyes) received prompt irrigation with 0.9% saline every two hours, 0.1% pranoprofen eye drops four times a day, 20% autologous serum every two hours, recombinant bovine basic fibroblast growth factor eye-gel two times a day, oral vitamin C 2.0?g and prednisone 30?mg daily. Fourteen patients (group B, 16 eyes) received additional treatment with heparin eye drops. Ten eyes in group A and seven eyes in group B developed a pseudomembrane on the ocular surface at significantly different rate (mean?±?SD) of 1.20?±?1.01 and 0.43?±?0.51, respectively (t?=?2.66, p?=?0.01). Seven eyes among 10 had a pseudomembrane reoccurred in group A while none had a pseudomembrane reoccurred in group B (Fisher’s exact test, p?=?0.01). No significant differences were seen in the duration of epithelial recovery between the two groups: 15.13?±?5.13 days in group A and 16.81?±?5.56 days in group B (t?=?0.87, p?=?0.39). After the treatment, mild corneal opacity and pannus were observed in five patients of group A and four patients of group B, without any significant difference between the two groups (p?=?0.70).

Conclusions: The paraquat-induced ocular surface injury observed in this case series was characterized by the formation of conjunctival pseudomembrane with good prognosis and mild complications. Heparin eye drops reduce the occurrence, especially the reoccurrence of pseudomembrane. Further studies are warranted.     

自体角膜缘干细胞移植联合丝裂霉素C治疗胬肉临床效果观察

目的探讨自体角膜缘干细胞移植联合丝裂霉素C治疗翼状胬肉的临床效果。方法自体角膜缘干细胞移植联合丝裂霉素C组44例(49眼),单纯手术切除组43例(44眼)。术后随访6个月～2年。结果观察两组术后复发情况。结论自体角膜缘干细胞移植联合丝裂霉素C能明显降低翼状胬肉的复发率。     

Comparative efficacy of olopatadine 0.1% ophthalmic solution versus levocabastine 0.05% ophthalmic suspension using the conjunctival allergen challenge model

SUMMARY

Objective: To compare the efficacy of olopatadine and levocabastine in reducing ocular allergic itching and vascular hyperemia (redness) induced by conjunctival allergen challenge.

Research design and methods: The study was a randomized, double-masked, contralateral study using the conjunctival allergen challenge (CAC) model. At Visit 1, subjects with a positive allergen skin test and a history of allergic conjunctivitis were administered increasing concentrations of allergen until at least a moderate grade 2 ocular itching and conjunctival redness response was obtained in both eyes. Allergic signs were graded on standardized 0–4 scales. Subjects who reacted positively were re-challenged at Visit 2 with the pre-determined concentration of allergen. Subjects who again responded with at least a grade 2 bilateral ocular itching and conjunctival redness score at Visit 2 were eligible for drug evaluation. At Visit 3, subjects received olopatadine in one eye and levocabastine in the contralateral eye according to a computer-generated randomization scheme generated prior to commencement of the study. Ocular discomfort was then graded in both eyes. Subjects were bilaterally challenged with the predetermined concentration of allergen 27?min after topical drug administration, such that the first post-challenge assessment was made 30?min post-drug instillation. Allergic signs and symptoms were evaluated at 3?min, 10?min, and 20?min post-challenge and safety and efficacy analyses were performed.

Results: Sixty-eight subjects received study drug and were included in the safety and efficacy analyses. Ocular itching scores for olopatadine were significantly lower than levocabastine at 3?min and 10?min post-challenge (?p < 0.001). Ocular redness scores for olopatadine were significantly lower than levocabastine at all time points post-challenge (?p < 0.0001). Of all subjects, 4.41% reported ocular discomfort in the olopatadine eye and 26.5% in the levocabastine treated eye.

Conclusion: Olopatadine treated eyes had significantly less itching and redness than levocabastine treated eyes after conjunctival allergen challenge. Olopatadine was also associated with less discomfort upon instillation than levocabastine.     

A comparison of the fourth-generation fluoroquinolones gatifloxacin 0.3% and moxifloxacin 0.5% in terms of ocular tolerability

SUMMARY

Purpose: To compare the ocular tolerability of the commercially available ophthalmic solutions of the fourth-generation fluoroquinolones, gatifloxacin 0.3% (Zymart, Allergan, Inc., Irvine, CA) with benzalkonium chloride (BAK) and moxifloxacin 0.5% (Vigamoxt) without BAK.

Methods: A baseline evaluation was conducted on 30 healthy volunteers for conjunctival hyperemia, conjunctival vascularity, pupil size, and anterior chamber (AC) cell and flare. Pupils were measured under scotopic conditions with a Colvard pupillometer. Conjunctival hyperemia and vascularity, and AC reaction were measured on a Likert-like scale of 0-3. Subjects then received drops in both eyes from masked bottles of gatifloxacin ophthalmic solution 0.3% with BAK (in one eye determined randomly) and moxifloxacin ophthalmic solution 0.5% without BAK (in the contralateral eye) in a double-masked fashion. Subjects graded pain and ocular irritation in each eye on a scale of 1-10 after 5min with their eyes closed. The examination was then repeated.

Results: The average age of this study population was 34.4years. The groups of eyes receiving moxifloxacin 0.5% demonstrated an increase in mean conjunctival hyperemia (0.21 [range: 0-1] at baseline to 1.52 [range: 0-3] at 5min.)

that was significantly greater (p?=?0.0005) compared with that of the group receiving gatifloxacin 0.3% (0.22 [range: 0-1] at baseline to 0.45 [range: 0-2] at 5min). The group receiving moxifloxacin 0.5% showed an increase in conjunctival vascularity (0.55 [range: 0-1] at baseline to 1.61 [range: 0.5-3] at 5?min.) that was significantly greater (p?=?0.0005) compared with that of the group receiving gatifloxacin 0.3% (0.52 [range: 0-1] at baseline to 0.68 [range: 0-2] at 5?min.). Significantly less pain (1.2 vs. 3.2, p?=?0.001) and irritation (0.64 vs. 3.42, p?=?0.001) occurred with gatifloxacin 0.3% than with moxifloxacin 0.5%. Pupil size was significantly reduced (5.65mm-5.05mm) in eyes receiving moxifloxacin 0.5% (p?=?0.004) and no significant change occurred in pupil size (5.60mm-5.65mm) in eyes that received gatifloxacin 0.3% (p?=?0.878). No AC reaction was noted with either medication.

Conclusions: The group of eyes receiving gatifloxacin 0.3% with BAK demonstrated greater ocular tolerability in comparison to the group receiving moxifloxacin 0.5% without BAK. Moxifloxacin-induced pupillary miosis may be due to prostaglandin release in the anterior chamber. A limitation of this study is the relatively young age of the study population.     

培养胎兔角膜缘干细胞移植治疗兔眼碱烧伤的实验研究

目的 探讨羊膜为载体培养的胎兔角膜缘干细胞移植治疗兔角膜缘碱烧伤的效果。方法 将胎兔角膜缘干细胞原代培养于羊膜上7d后。移植于兔角膜缘碱烧伤动物模型眼，并对治疗后的角膜进行临床及病理学检查。结果 体外培养的胎兔角膜缘干细胞可在羊膜上保持高增殖力。并分化为密集的角膜上皮细胞层。角膜缘干细胞移植术后兔角膜上皮完整、基质细胞浸润减轻、新生血管减少，与对照组和单纯羊膜移植组相比其临床评分差异有显著意义。结论 胎兔角膜缘干细胞移植术治疗角膜碱烧伤可有效重建眼表，为临床应用胎儿角膜缘干细胞进行眼表重建奠定了实验基础。     

逆向撕除联合角膜缘干细胞移植治疗翼状胬肉效果观察

目的探讨逆向撕除联合角膜缘干细胞移植治疗翼状胬肉的疗效。方法通过对34眼行常规单纯翼状胬肉切除术,42眼行逆向撕除联合角膜缘干细胞移植术。观察术后视力,结膜移植片愈合情况、并发症,并对1年后两种术式复发率进行对比分析。结果1年后随访,34眼行常规单纯翼状胬肉切除术后12眼（35.3％）复发,42眼行逆向撕除联合角膜缘干细胞移植术后有6眼（14．2％）复发,复发率比较差异具有显著性（p〈0．05）。全部患者视力均有不同程度提高,无睑球粘连,无持续性角膜浸润及其他并发症发生。结论逆向撕除联合角膜缘干细胞移植治疗翼状胬肉疗效好,无并发症,复发率低,值得临床推广。     

自体角膜缘干细胞移植联合羊膜移植治疗复发性翼状胬肉的疗效观察

目的：探讨自体角膜缘干细胞移植联合羊膜移植术治疗复发性翼状胬肉的临床效果。方法选取60例（73眼）复发性翼状胬肉患者为研究对象,按照数字随机法分为观察组（30例,38眼）和对照组（30例,35眼）,对照组采用羊膜移植术,观察组采用自体角膜缘干细胞结膜植片联合羊膜移植术。术后随访12个月,分析比较两种术式的临床效果、复发率及并发症。结果两组患者的手术时间无明显差异（P〉0.05）,术后23周羊膜逐渐溶解、吸收。观察组角膜上皮愈合时间低于对照组（P〈0.05）;所有患者均获得随访,术后未出现角膜、巩膜溃疡,睑球粘连以及眼球活动受限等并发症。观察组2眼（5.3%）翼状胬肉复发,对照组4眼（11.4%）复发,观察组复发率显著低于对对照组（P〈0.05）,具有统计学意义。结论自体角膜缘干细胞移植联合羊膜移植治疗不会影响原术眼局部组织结构,可缩短角膜上皮愈合时间,降低翼状胬肉复发率。     

自体角膜缘干细胞移植术与单纯切除术治疗翼状胬肉的临床分析

目的观察在显微镜下自体角膜缘干细胞移植术治疗翼状胬肉的疗效。方法在眼科手术显微镜下切除翼状胬肉后,采用角膜缘干细胞移植术治疗翼状胬肉52例72眼,与行单纯翼状胬肉切除术治疗翼状胬肉42例57眼的对照组进行对比分析。结果术后随访6~24个月,治疗组疗效与对照组相比有极其显著的差异(P<0.01)。结论翼状胬肉切除联合自体角膜缘干细胞移植术,术后有效率高,复发率低,是治疗翼状胬肉的有效方法。     

角膜缘干细胞移植治疗翼状胬肉的临床观察

目的:观察角膜缘干细胞移植治疗翼状胬肉和防止复发的效果。方法:对102例翼状胬肉患者行带蒂结膜瓣的自体角膜缘干细胞移植术。结果:植片愈合好,角膜创面光滑透明,无角膜新生血管形成,术后无复发及其他并发症。结论:翼状胬肉显微切除加带蒂结膜瓣的自体角膜缘干细胞移植术是治疗翼状胬肉,防止复发的有效方法。     

自体角膜缘上皮干细胞移植与单纯翼状胬肉切除术疗效比较

目的：观察翼状胬肉单纯切除术与翼状胬肉切除加自体角膜缘干细胞移植术的临床疗效。方法：将2006年3月～2010年6月78例（93眼）翼状胬肉患者随机分为翼状胬肉单纯切除术组（对照组）及翼状胬肉切除加自体角膜缘干细胞移植术组（治疗组）,比较其疗效。结果：采用翼状胬肉单纯切除术后患者复发率为13.3%,上皮修复时间为（5.83±0.84）d;而采用自体角膜缘干细胞移植后复发率仅为2.08%,上皮修复时间为（3.02±0.79）d,且两者相比,差异有统计学意义（P〈0.05）。结论：翼状胬肉切除加自体角膜缘干细胞移植术与翼状胬肉单纯切除术相比,可以有效地降低复发率,而且缩短角膜上皮修复时间,是治疗翼状胬肉较为理想有效的方法。     

改良干细胞移植治疗翼状胬肉172例分析

目的 探讨翼状胬肉的手术治疗术式及疗效.方法 回顾2008年1月至2010年6月收治的翼状胬肉患者172例172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 所有患者术后随访3～24个月,绝大多数患者角膜上皮和结膜伤口愈合良好,有6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.     

自体角膜缘干细胞移植联合丝裂霉素对胬肉术后复发的影响

目的探讨显微镜下翼状胬肉切除加自体角膜缘干细胞移植联合丝裂霉素棉片使用与传统显微镜下单纯翼状胬肉切除术后疗效差异。方法 39例患者(46只眼)单纯翼状胬肉患者,随机分2组:单纯切除组23只眼使用显微镜下进行单纯翼状胬肉切除;联合手术组23只眼在手术显微镜下切除胬肉组织后0.02%丝裂霉素处理,取带有角膜缘干细胞的结膜瓣移植。术后随访12个月,观察胬肉复发情况。结果按胬肉术后的4种状态评定:联合手术组有2例复发,单纯切除组有8例复发。结论自体角膜缘干细胞移植加丝裂霉素手术与单纯胬肉切除术比较有明显的低复发率。