Department of Neonatology, The Townsville Hospital, 100 Angus Smith Drive, Douglas, Queensland 4814, Australia.
Br J Ophthalmol. 2012 May;96(5):662-4. doi: 10.1136/bjophthalmol-2011-300950. Epub 2012 Jan 27.
The objectives of this study were to measure optic disc size in full term infants and to determine whether this value is influenced by sex or birth weight.
Retinal images from a cohort of full term infants admitted to a tertiary perinatal centre were obtained using a retinal camera. Optic disc size was measured by carefully delineating the outline with a cursor using image analysis software. MEDLINE was then systematically searched to compare the data with other published articles.
35 images of left and right eyes from 35 infants were assessed. An image from one eye per patient was then chosen for analysis. The following results were found: mean birth weight 3050±706 g; mean gestation 38.9±1.4 weeks. Mean optic disc area was 1.26±0.23 mm(2); mean vertical diameter was 1.37±0.15 mm; and mean horizontal diameter was 1.14±0.12 mm. The vertical diameter of the optic disc was significantly longer than the horizontal diameter (p<0.0001).
Birth weight and sex did not influence the size of the optic disc in term infants. There were no differences in optic disc measurements between male and female infants and between low birth weight and normal birth weight infants.
本研究旨在测量足月婴儿的视盘大小，并确定其是否受性别或出生体重的影响。
使用视网膜相机获取了一个在三级围产期中心入院的足月婴儿队列的视网膜图像。使用图像分析软件通过仔细勾勒轮廓用光标测量视盘大小。然后系统地在 MEDLINE 上搜索以将数据与其他已发表的文章进行比较。
评估了 35 名婴儿的 35 只左眼和右眼图像。然后为分析选择了每位患者的一只眼的图像。得出以下结果：平均出生体重 3050±706 克；平均胎龄 38.9±1.4 周。平均视盘面积为 1.26±0.23 平方毫米（2）；平均垂直直径为 1.37±0.15 毫米；平均水平直径为 1.14±0.12 毫米。视盘的垂直直径明显长于水平直径（p<0.0001）。
足月婴儿的出生体重和性别对视盘大小没有影响。男婴和女婴之间以及低出生体重儿和正常出生体重儿之间的视盘测量值没有差异。
