Flaporhexis, a technique to make the femtosecond laser corneal flap was developed primarily to reduce the mechanical trauma associated with separating the corneal tissue by taking advantage of the cornea’s natural an...Flaporhexis, a technique to make the femtosecond laser corneal flap was developed primarily to reduce the mechanical trauma associated with separating the corneal tissue by taking advantage of the cornea’s natural anatomy and was first described in a peer reviewed artice in 2008. The anterior part of the cornea tends to be stronger, thereby allowing tearing (Greek “rhexis”) along the preformed cuts of the femtosecond photo disruption. Flaporhexis differs from Binder’s technique of “hinge opening” as published in 2006 by opening the flap from the opposite side. If a femtosecond flap lift is performed correctly, the surgeon will find a virgin, uniform, dry stromal bed, which had not been manipulated by any surgical instrument and is therefore perfect for wavefront guided laser surgery as “Sub-Bowman’s Keratomileusis”.展开更多
目的探讨准分子激光前弹力层下角膜磨镶术(sub-Browman’s keratomileusis,SBK)与准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)术后不同时间干眼的症状及相关指标的变化。方法回顾性分析2010年3月至2011年12月在我院...目的探讨准分子激光前弹力层下角膜磨镶术(sub-Browman’s keratomileusis,SBK)与准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)术后不同时间干眼的症状及相关指标的变化。方法回顾性分析2010年3月至2011年12月在我院接受准分子激光手术的近视患者。行SBK者106例(212眼)为SBK组,行LASIK者130例(260眼)为LASIK组,分别观察术前及术后1周、1个月、3个月、6个月干眼症状、角膜荧光素染色、非侵入性泪膜破裂时间、基础泪液分泌量,并进行统计学分析。结果术后1个月和3个月SBK组分别有47眼(22.2%)和25眼(11.8%)出现干眼症状,而LASIK组分别有139眼(53.5%)和92眼(35.4%),两组比较差异均有统计学意义(均为P<0.05)。术后1个月和3个月SBK组分别有39眼(18.4%)和18眼(8.5%)出现角膜着色,而LASIK组分别为125眼(48.1%)和81眼(31.2%),两组比较差异均有统计学意义(均为P<0.05)。术后1个月、3个月SBK组基础泪液分泌量和非侵入性泪膜破裂时间分别为(11.28±1.51)mm、(11.56±1.32)s和(13.57±2.36)mm、(14.39±1.01)s,LASIK组分别为(7.45±1.29)mm、(7.83±2.15)s和(8.15±1.80)mm、(8.57±1.46)s,两组比较差异均有统计学意义(均为P<0.05)。至术后6个月,以上各项指标两组比较差异均无统计学意义(均为P>0.05)。结论 SBK较LASIK治疗近视术后干眼发生率低,恢复快。展开更多
目的:探讨准分子激光原位角膜磨镶术(laserin situ keratomileusis,LASIK)后近视患者调节性集合与调节比率(accommodative convergence per unit of accommodation,AC/A)变化。方法:Von Graefe法测定患者近距水平隐斜,给予+1.00D近附加...目的:探讨准分子激光原位角膜磨镶术(laserin situ keratomileusis,LASIK)后近视患者调节性集合与调节比率(accommodative convergence per unit of accommodation,AC/A)变化。方法:Von Graefe法测定患者近距水平隐斜,给予+1.00D近附加后再次测量,结果之差为梯度性AC/A比率,测量患者LASIK手术前、手术后1wk;1,3,6mo的AC/A比率,结果进行统计学分析。结果:术前戴镜AC/A比率为(2.98±0.80)△/D,手术后1wk;1,3,6mo的AC/A比率分别为(2.02±0.57)△/D,(2.43±0.63)△/D,(2.87±0.65)△/D,(2.91±0.68)△/D,手术后1wk;1mo时AC/A比率较手术前显著降低(P<0.01)。手术后3,6mo AC/A比率较手术前无差异。结论:LASIK术后1wk;1mo,AC/A比率较术前降低,术后3mo升至术前水平并稳定。展开更多
文摘Flaporhexis, a technique to make the femtosecond laser corneal flap was developed primarily to reduce the mechanical trauma associated with separating the corneal tissue by taking advantage of the cornea’s natural anatomy and was first described in a peer reviewed artice in 2008. The anterior part of the cornea tends to be stronger, thereby allowing tearing (Greek “rhexis”) along the preformed cuts of the femtosecond photo disruption. Flaporhexis differs from Binder’s technique of “hinge opening” as published in 2006 by opening the flap from the opposite side. If a femtosecond flap lift is performed correctly, the surgeon will find a virgin, uniform, dry stromal bed, which had not been manipulated by any surgical instrument and is therefore perfect for wavefront guided laser surgery as “Sub-Bowman’s Keratomileusis”.
文摘目的:探讨准分子激光原位角膜磨镶术(laserin situ keratomileusis,LASIK)后近视患者调节性集合与调节比率(accommodative convergence per unit of accommodation,AC/A)变化。方法:Von Graefe法测定患者近距水平隐斜,给予+1.00D近附加后再次测量,结果之差为梯度性AC/A比率,测量患者LASIK手术前、手术后1wk;1,3,6mo的AC/A比率,结果进行统计学分析。结果:术前戴镜AC/A比率为(2.98±0.80)△/D,手术后1wk;1,3,6mo的AC/A比率分别为(2.02±0.57)△/D,(2.43±0.63)△/D,(2.87±0.65)△/D,(2.91±0.68)△/D,手术后1wk;1mo时AC/A比率较手术前显著降低(P<0.01)。手术后3,6mo AC/A比率较手术前无差异。结论:LASIK术后1wk;1mo,AC/A比率较术前降低,术后3mo升至术前水平并稳定。
