Crossing and distance between the disc and obstruct site in super-temporal branch retinal vein obstruction / 眼科新进展

ABSTRACT

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.