Wilson C, Theodorou M, Cocker K D, Fielder A R
Department of Optometry and Visual Science, City University, Northampton Square, London EC1V 0HB, UK.
Br J Ophthalmol. 2006 Jun;90(6):702-4. doi: 10.1136/bjo.2005.085019. Epub 2006 Feb 7.
To determine the temporal retinal vessel angle in babies and its relation to preterm birth.
Digital images were obtained during routine screening for retinopathy of prematurity (ROP). The temporal retinal vessel angle was measured in 164 eyes of 82 babies born "very preterm" (24-27 weeks gestational age (GA)), "preterm" (28-31 weeks GA), and "near term" (>/=32 weeks GA).
Mean temporal vessel angle (TVA) for all three GA groups together is 80.0 degrees (SD 17.0 degrees ) for the right eye and 80.5 degrees (16.7 degrees ) for the left eye. The range is right eye 59-106 degrees , left eye 69-97 degrees , with 95% data above 67 degrees for the right and 63 degrees for the left eye. For babies born near term, TVA is 82 degrees in each eye. There is a high degree of interocular symmetry between right and left eyes and a statistically insignificant trend for increasing TVA with increasing GA. The presence and stage of ROP affected one parameter of the left eye alone.
These data provide normative data on the TVA in babies and will facilitate, especially if there is interocular asymmetry, determining whether there is macular displacement.
确定婴儿视网膜颞侧血管角度及其与早产的关系。
在早产儿视网膜病变（ROP）的常规筛查过程中获取数字图像。对82例出生时“极早产”（胎龄24 - 27周）、“早产”（胎龄28 - 31周）和“近足月”（胎龄≥32周）婴儿的164只眼睛测量视网膜颞侧血管角度。
所有三个胎龄组的右眼平均颞侧血管角度（TVA）为80.0度（标准差17.0度），左眼为80.5度（16.7度）。范围是右眼59 - 106度，左眼69 - 97度，95%的数据右眼高于67度，左眼高于63度。对于近足月出生的婴儿，每只眼睛的TVA为82度。左右眼之间存在高度的眼内对称性，并且随着胎龄增加TVA有统计学上无显著意义的增加趋势。ROP的存在和阶段仅影响左眼的一个参数。
这些数据提供了婴儿TVA的规范数据，特别是在存在眼内不对称的情况下，将有助于确定是否存在黄斑移位。
