目的研究准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)角膜瓣厚度对角膜非球面性变化的影响。方法回顾性分析2009年6月至2009年12月行准分子激光近视矫治手术患者,根据角膜板层刀不同分为Moria One use plus-SBK薄角...目的研究准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)角膜瓣厚度对角膜非球面性变化的影响。方法回顾性分析2009年6月至2009年12月行准分子激光近视矫治手术患者,根据角膜板层刀不同分为Moria One use plus-SBK薄角膜瓣(SBK)组和MORIA2-130Ixm厚角膜瓣(LASIK)组,每组各60例(120眼)。分别于术前和术后1周、1个月、3个月行Petencam三维眼前节分析及诊断系统检查,得到角膜前后表面中央20°、25°、30°、35°范围的Q值以及角膜前后表面球差Z(4,0),对所有数据进行统计学分析。结果不同厚度角膜瓣组角膜前后表面Q20、Q25、Q30、Q35和角膜前后表面像差之间手术前后差异均没有统计学意义(均为P>0.05);两组患者手术后角膜前表面像差增加和等效屈光度相关,LASIK组角膜后表面像差增加与等效屈光度相关。手术前两组患者角膜前后表面像差Z40和Q20、Q25、Q30、Q35均相关,手术后LASIK组角膜前表面Z40和Q20相关(r=0.306,P=0.029),角膜后表面Z40和Q25相关(r=-0.293,P=0.037)。SBK组角膜前表面Z40和Q20、Q25、Q30、Q35均相关(r=0.610、r=0.560、r=0.442、r=0.381),角膜后表面Z40和Q20相关(r=-0.364)。结论 LASIK角膜非球面的改变不受角膜瓣厚度的影响,薄角膜瓣主要影响角膜前表面,说明通过薄角膜瓣SBK来矫正近视是安全有效的。展开更多
Bulbar urethral ischemic necrosis(BUIN)is an iatrogenic entity resulting from repeated attempts at performing anastomotic urethroplasty for pelvic fracture urethral injuries.Etiologically speaking,BUIN is related to a...Bulbar urethral ischemic necrosis(BUIN)is an iatrogenic entity resulting from repeated attempts at performing anastomotic urethroplasty for pelvic fracture urethral injuries.Etiologically speaking,BUIN is related to a compromised blood supply of the bulbar urethra,which normally relies on anterograde supply from bulbar arteries and retrograde supply from recurrent branches of dorsal penile arteries,through the glans.At each transection of the bulbar urethra,both the anterograde and retrograde supplies are compromised,increasing the risk of BUIN.Even though this term is widely used among reconstructive urologists,BUIN is orphan of an accepted scientific definition.We aim to report our personal perspective on BUIN,to identify factors associated with its occurrence,and to describe the management options in these patients.展开更多
文摘目的研究准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)角膜瓣厚度对角膜非球面性变化的影响。方法回顾性分析2009年6月至2009年12月行准分子激光近视矫治手术患者,根据角膜板层刀不同分为Moria One use plus-SBK薄角膜瓣(SBK)组和MORIA2-130Ixm厚角膜瓣(LASIK)组,每组各60例(120眼)。分别于术前和术后1周、1个月、3个月行Petencam三维眼前节分析及诊断系统检查,得到角膜前后表面中央20°、25°、30°、35°范围的Q值以及角膜前后表面球差Z(4,0),对所有数据进行统计学分析。结果不同厚度角膜瓣组角膜前后表面Q20、Q25、Q30、Q35和角膜前后表面像差之间手术前后差异均没有统计学意义(均为P>0.05);两组患者手术后角膜前表面像差增加和等效屈光度相关,LASIK组角膜后表面像差增加与等效屈光度相关。手术前两组患者角膜前后表面像差Z40和Q20、Q25、Q30、Q35均相关,手术后LASIK组角膜前表面Z40和Q20相关(r=0.306,P=0.029),角膜后表面Z40和Q25相关(r=-0.293,P=0.037)。SBK组角膜前表面Z40和Q20、Q25、Q30、Q35均相关(r=0.610、r=0.560、r=0.442、r=0.381),角膜后表面Z40和Q20相关(r=-0.364)。结论 LASIK角膜非球面的改变不受角膜瓣厚度的影响,薄角膜瓣主要影响角膜前表面,说明通过薄角膜瓣SBK来矫正近视是安全有效的。
文摘Bulbar urethral ischemic necrosis(BUIN)is an iatrogenic entity resulting from repeated attempts at performing anastomotic urethroplasty for pelvic fracture urethral injuries.Etiologically speaking,BUIN is related to a compromised blood supply of the bulbar urethra,which normally relies on anterograde supply from bulbar arteries and retrograde supply from recurrent branches of dorsal penile arteries,through the glans.At each transection of the bulbar urethra,both the anterograde and retrograde supplies are compromised,increasing the risk of BUIN.Even though this term is widely used among reconstructive urologists,BUIN is orphan of an accepted scientific definition.We aim to report our personal perspective on BUIN,to identify factors associated with its occurrence,and to describe the management options in these patients.
