Compound eyes in living arthropods such as insects are very sensitive to motion , and it is likely that they were similarly important in predator detection in trilobites.

• 复眼在现生的节肢动物如昆虫中非常常见，这些复眼对运动的物体非常敏感，对于一些食肉的三叶虫来说这种相似的构造非常重要。