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山羊的瞳孔是矩形的瞳孔是指虹膜中间的开孔,它是光线进入眼内的门户,也称作“瞳仁”。它在亮光处缩小,在暗光处放大。人类和很多动物的瞳孔都由不自觉的虹膜伸缩控制大小,以便调节进入眼内的光线强度,这称为瞳孔反射。
Goat’s pupil is a rectangular pupil is the middle of the iris openings, it is the light into the eye portal, also known as “pupil”. It diminishes in the light and enlarges in the dark. Pupils in humans and many animals are uncontrolled by the iris retractable size, in order to regulate the intensity of light into the eye, which is called pupillary reflex.