作者从20—30岁对象中选50名正视眼(心光度-0.5～+0.5,视力为20/20),其中男性40名(平均26.4岁),女性10名(平均24.7岁),观察了眼轴长度与头大小之间的相互关系。方法:头长度测枕骨粗隆突出部与眉间之距离;头宽测两侧外耳门上方最突出点之间距离; The authors selected 50 eyes from 20-30 years old (heart rate -0.5 ~ + 0.5, visual acuity 20/20), of which 40 were male (average 26.4 years) and 10 were female (average 24.7 years old) The relationship between shaft length and head size. Methods: The length of the head measured the distance between the occipital protuberance and the eyebrows; the width of the head measured the distance between the two most prominent points above the outer ear door;