Timmerman E A, de Lavalette V W, van den Brom H J
Department of Ophthalmology, University Hospital Groningen, The Netherlands.
Retina. 1997;17(3):196-9. doi: 10.1097/00006982-199705000-00004.
To determine whether axial length is a factor in branch retinal vein occlusion.
Axial length measurements in a group of 24 patients with a unilateral branch retinal vein occlusion were compared with the axial length measurements in a control group. Axial length measurements were taken with an A-scan; affected and unaffected eyes were measured. The control group consisted of 24 individuals who matched the patients in the branch retinal vein occlusion group in age, systemic hypertension status, and diabetes mellitus status.
The affected and fellow eye in patients in the branch retinal vein occlusion group did not differ statistically in axial length (P = 0.26). The mean axial length of affected eyes in the branch retinal vein occlusion group was 22.76 +/- 0.92 mm, and the mean axial length of control eyes was 23.36 +/- 1.08 mm. The difference in axial length between the eyes with a branch retinal vein occlusion and the eyes in the control group was statistically significant (P = 0.023).
The axial length of affected eyes of patients with branch retinal vein occlusion was on average 0.60 mm shorter than that of eyes of matched controls (95% confidence interval, 0.30-0.90 mm). The shorter axial length could be a local risk factor in the pathogenesis of a branch retinal vein occlusion.
确定眼轴长度是否为视网膜分支静脉阻塞的一个影响因素。
对一组24名单侧视网膜分支静脉阻塞患者的眼轴长度测量值与一个对照组的眼轴长度测量值进行比较。使用A超进行眼轴长度测量；对患眼和未患眼均进行测量。对照组由24名在年龄、系统性高血压状态和糖尿病状态方面与视网膜分支静脉阻塞组患者相匹配的个体组成。
视网膜分支静脉阻塞组患者的患眼和对侧眼在眼轴长度上无统计学差异（P = 0.26）。视网膜分支静脉阻塞组患眼的平均眼轴长度为22.76 +/- 0.92毫米，对照组眼睛的平均眼轴长度为23.36 +/- 1.08毫米。视网膜分支静脉阻塞患眼与对照组眼睛在眼轴长度上的差异具有统计学意义（P = 0.023）。
视网膜分支静脉阻塞患者患眼的眼轴长度平均比匹配对照组的眼睛短0.60毫米（95%置信区间，0.30 - 0.90毫米）。较短的眼轴长度可能是视网膜分支静脉阻塞发病机制中的一个局部危险因素。
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