保留上皮角膜胶原交联术治疗青少年圆锥角膜的疗效分析  被引量:8

Clinical results of transepithelial corneal collagen cross-linking for pediatric keratoconus

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作  者:张佳[1] 陈世豪[1] 李旖旎[1] 丁萍[1] 王勤美[1] 

机构地区:[1]温州医科大学附属眼视光医院,325027

出  处:《中华实验眼科杂志》2017年第2期135-138,共4页Chinese Journal Of Experimental Ophthalmology

基  金:基金项目:国家科技支撑计划项目(2012BA108805);温州市科技计划项目(首批重点创新团队)(C20120009-02);温州市科技计划项目(Y20140396);温州医科大学附属眼视光医院创新引导项目(YNCX201103)

摘  要:背景圆锥角膜是一种角膜进行性膨隆和变薄的疾病,常于青少年时期发病,伴随不同程度的视觉质量下降。角膜胶原交联术(CXL)是利用维生素B2和紫外线A(UVA)之间的光氧化反应来增加角膜硬度,延缓甚至阻止圆锥角膜膨隆的进展。 目的评估保留上皮CXL治疗青少年圆锥角膜的安全性和有效性。 方法纳入2010年2月至2013年3月于温州医科大学附属眼视光医院拟行保留上皮CXL的原发性圆锥角膜患者9例10眼,年龄13~17岁,平均(15±1)岁。术中使用质量分数0.1%丁卡因滴眼液作为促渗剂点眼,再使用质量分数0.5%核黄素液点眼至前房饱和状态,最后使用强度为3 mW/cm2的紫外线A照射30 min。术后7 d、1个月、3个月、6个月及12个月测量远距裸眼视力(UDVA)、远距矫正视力(CDVA)、球镜度、柱镜度、等效球镜度(SE)、角膜前表面最大角膜曲率值(Kmax)、角膜前后表面高度值、角膜最薄点厚度。术后7 d测量角膜内皮细胞密度(ECD)。记录术后角膜上皮愈合时间。 结果保留上皮CXL术后角膜上皮平均愈合时间为(1.4±0.8)d。术后12个月时,平均UDVA、CDVA分别从术前的1.02±0.16和0.34±0.20改善至0.77±0.18和0.25±0.15,平均球镜度和SE分别从(-7.15±3.00)D和(-9.26±3.23)D改善为(-5.28±2.05)D和(-7.05±2.08)D,平均Kmax从(64.1±11.9)D降低至(61.8±10.4)D,差异均有统计学意义(t=4.251、3.750、-2.515、-2.597、2.304,均P〈0.05)。术前与术后12个月平均柱镜度、角膜最薄点厚度比较差异均无统计学意义(t=-1.331、0.328,均P〉0.05)。术前与术后7 d ECD的比较差异无统计学意义(t=1.205,P〉0.05)。有2眼分别在术后3个月和术后6个月开始出现持续的角膜基质混浊。 结论保留上皮CXL能够安全、有效地延缓或阻止青少年圆锥角膜的进展。BackgroundKeratoconus is a progressive corneal thinning and protrusion disease that develop in the age of puberty, resulting in a certain extent impairment of visual function.Corneal collagen cross-linking (CXL) increases the stiffness of the cornea through the photooxidation of ultraviolet A (UVA) and riboflavin, with the aim to postpone and prevent the progression of keratoectasia. ObjectiveThis study was to evaluate the safety and efficacy of transepithelial CXL in the treatment of pediatric keratoconus. MethodsTen eyes of 9 pediatric patients with keratoconus undergoing transepithelial CXL were enrolled from February 2010 to March 2013 in Affiliated Eye Hospital of Wenzhou Medical University, with the mean age was (15±1) years (range from 13 years to 17 years). After topical anesthesia (0.1% tetracaine) for 15 minutes, 0.5% riboflavin was applied until it was saturated in the anterior chamber, then UVA with the intensity of 3 mW/cm2 was performed on the cornea for 30 minutes.The uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), refractive error, topography, corneal thinnest thickness were measured 7 days, 1 month, 3 months, 6 months and 1 year after operation.Endothelium cell density (ECD) was measured 7 days after operative. ResultsThe mean corneal reepithelization time was (1.4±0.8) days.The UDVA and CDVA were significantly improved from preoperative 1.02±0.16 and 0.34±0.20 to postoperative 0.77±0.18 and 0.25±0.15, respectively (t=4.251, 3.750; both at P〈0.05). The refractive sphere and spherical equivalent significantly changed from preoperative (-7.15±3.00)D and (-9.26±3.23)D to postoperative (-5.28±2.05)D and (-7.05±2.08)D 1 year, respectively (t=-2.515, -2.597; both at P〈0.05). Maximum K-value (Kmax) was significantly decreased from preoperative (64.1±11.9)D to postoperative (61.8±10.4)D (t=2.304, P〈0.05). The refractive cylinder, corneal thinnest thickness and ECD sho

关 键 词:圆锥角膜 角膜胶原交联术 青少年 视觉/治疗效果 

分 类 号:R779.6[医药卫生—眼科]

 

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