简介：目的探讨虹膜定位联合波前像差引导LASIK矫正近视的临床疗效.方法回顾性对照分析研究,选择2007年1月至2008年12月接受常规LASIK手术患者40例（80只眼）和接受虹膜定位联合波前像差引导LASIK手术患者51例（102只眼）,对二组术后6个月的疗效进行对比研究.结果术后6个月二组所有患者裸眼视力≥术前最佳矫正视力（BCVA）.波前组与常规组术后视力较术前视力（BCVA）提高≥1行分别为：42只眼（41.2％）和20只眼（25％）,波前组明显优于常规组（P＜0.01）.术后6个月等效球镜≤0.5D的波前组46只眼（45.1％）,常规组19只眼（23.8％）,波前组明显小于常规组（P＜0.01）.术后6个月采用术前与瞳孔直径基本相同时测量数据,波前组与常规组高阶像差的RMS值分别是0.573±0.51μm和0.775±0.57μm,波前组小于常规组（P＜0.05）,两组RMS值较术前均有不同程度增高,幅度分别为：20.6％与39.4％,波前组明显小于常规组（P＜0.01）.结论虹膜定位联合波前像差引导LASIK矫正近视安全、有效,术后视力提高理想,残余屈光度较少,是一种理想的手术方式.

简介：近视眼的发病与多种因素相关,其中最主要的是遗传和环境因素.大量的近视相关研究提示近视的发生是在异常视觉信息的作用下,视网膜、脉络膜内多种神经递质和生长因子的表达发生改变,通过一系列信号传导过程引起巩膜重塑、眼轴延长而成.多种细胞因子通过NMDAR-1/NO-cGMP、TGF-β1/Smad3、JAK-Stat3等信号通路调控近视的形成与发展.本文就影响近视形成的几个主要信号传导通路的研究进展做一综述.

简介：AIM:ToidentifythefunctionofST2andexploretheroleofIL-33/ST2signalinginregulatingthepro-allergiccytokineproductioninhumancornealepithelialcells(HCECs).METHODS:HumancornealtissuesandculturedprimaryHCECsweretreatedwithIL-33indifferentconcentrationswithoutorwithdifferentinhibitorstoevaluatetheexpression,locationandsignalingpathwaysofST2inregulatingproductionofpro-allergiccytokineandchemokine.TheexpressionofmRNAwasdeterminedbyreversetranscriptionandrealtimePCR,andproteinproductionwasmeasuredbyenzyme-linkedimmunosorbentassay(ELISA),immunohistochemicalandimmunofluorescentstaining.ST2proteinwasdetectedindonorcornealepithelium,andST2signalwasenhancedbyexposuretoIL-33.·RESULTS:IL-33significantlystimulatedproductionofpro-allergiccytokinesthymicstromallymphopoietin(TSLP)andchemokine(CCL2,CCL20,CCL22)inHCECsatbothmRNAandproteinlevels.Thesestimulatedproductionsofpro-allergicmediatorsbyIL-33wereblockedbyST2antibodyorsolubleST2protein(P<0.05).Interestingly,theIκB-αinhibitorBAY11-7082orNF-κBactivationinhibitorquinazolineblockedNF-κBp65proteinnucleartranslocation,andalsosuppressedtheproductionsofthesepro-allergiccytokinesandchemokineinducedbyIL-33.CONCLUSION:ThesefindingsdemonstratethatIL-33/ST2signalingplaysanimportantroleinregulatingIL-33inducedpro-allergicresponses.IL-33andST2couldbecomenovelmoleculartargetsfortheinterventionofallergicdiseasesinocularsurface.