Clemmesen V, Olurin O
Acta Ophthalmol (Copenh). 1985 Jun;63(3):274-6. doi: 10.1111/j.1755-3768.1985.tb06804.x.
A comparative ultrasonic, oculometric study was performed in negroes, West Nigeria (151 persons) and in caucasians, Denmark (88 persons). The negros have thinner lenses than caucasians, and overall ethnic difference of 0.12 mm was found. Male negroes have longer vitreous and axial lengths than male caucasians (VB 0.56 mm, AxL 0.30 mm).
在尼日利亚西部的黑人（151人）和丹麦的白种人（88人）中进行了一项比较性超声眼测量研究。黑人的晶状体比白种人薄，发现总体种族差异为0.12毫米。男性黑人的玻璃体长度和眼轴长度比男性白种人长（玻璃体长度0.56毫米，眼轴长度0.30毫米）。
