摘要
目的 应用回顾性病例对照研究方法探讨视网膜分支静脉阻塞与动静脉交叉点特点以及与盘缘距离的关系。方法 收集颞上支视网膜分支静脉阻塞患者 5 3例和非视网膜血管疾病者 5 3例的荧光造影负片 ,分别观察颞上支和颞下支第一动静脉交叉支的交叉特点 ,并测定交叉点与盘缘的距离 ,应用 t检验进行统计学比较。结果 病例组颞上支动静脉第一交叉点与盘缘的平均距离与颞下支比较有显著性差异 (t=8.5 8,P<0 .0 1) ,病例组颞上支第一交叉点与盘缘的平均距离与对照组颞上支及颞下支比较也均有显著性差异 (t=7.6 9,P <0 .0 1) ,对照组患者的颞上支及颞下支比较无显著性差异 (t=1.0 6 ,P >0 .0 5 )。病例组颞上支动静脉负交叉 (静脉在动脉之上 ) 2例 ,颞下支负交叉 8例 ;对照组颞上支负交叉 7例 ,颞下支负交叉 16例。经统计学比较 ,病例组颞上支和颞下支负交叉支数有显著性差异 (χ2 =3.93,P<0 .0 5 )。病例组颞上支与对照组颞上支负交叉数目比较有显著性差异 (χ2 =3.98,P<0 .0 5 )。结论 视网膜分支静脉阻塞的发生与颞上支动静脉第一交叉点与盘缘距离过短有统计学关系 。
Objective The retrospective case control study was applied to investigate the crossing characteristics and the distance between the disc and the first crossing site in super temporal branch retinal vein obstruction.Methods Fifty three cases of branch retinal vein obstruction and 53 cases of controls were collected to observe the artery vein crossing characteristics and to measure the distance between the disc and the first crossing site.Results The average distances of super temporal and infer temporal branch in case group were significantly different. The distance of the super temporal branch in case group was significantly different from that in the control group. The distances of the super temporal branch and infer temporal branch were not significantly different in control group. The numbers of the arteries over the veins in the super temporal branch in case and control group were significantly different. Conclusion The mechanism of super temporal branch retinal vein obstruction is related with the near distance between the disc and the first crossing, and is also related with the numbers of the arteries over the veins in the crossing site.
出处
《眼科新进展》
CAS
2000年第5期348-349,共2页
Recent Advances in Ophthalmology
