Sivak J G, Kreuzer R O
Vision Res. 1983;23(1):59-70. doi: 10.1016/0042-6989(83)90042-1.
Split beams of varying separations from a helium-neon laser were directed through the crystalline lenses of a number of vertebrates. Photographs of the focal effects indicate the extent to which the refractive index variation of the lens and lens shape control spherical aberration. Of the fish studied, only rock bass lenses are relatively free of spherical aberration. Both goldfish and yellow perch exhibit substantial amounts of positive spherical aberration. Varying amounts of negative spherical aberration are present in frog, juvenile duck, dog and rat lenses. Positive and negative spherical aberration is found in human and cat lenses while cow, pig, lamb and rabbit lenses are almost free of aberration.
来自氦氖激光器的不同间距的分束光被引导穿过多种脊椎动物的晶状体。聚焦效果的照片表明晶状体的折射率变化和晶状体形状控制球差的程度。在所研究的鱼类中,只有岩鲈晶状体相对没有球差。金鱼和黄鲈都表现出大量的正球差。青蛙、幼鸭、狗和大鼠的晶状体中存在不同程度的负球差。人和猫的晶状体中发现了正球差和负球差,而牛、猪、羊和兔的晶状体几乎没有像差。