Sherk T E
J Exp Zool. 1978 Jan;203(1):47-60. doi: 10.1002/jez.1402030106.
The development of the compound eye was analyzed by marking individual ommatidia and by studying naturally occurring pigment band patterns. New ommatidia are added to the eye along its anterior margin. This changes the directions of view of the older ommatidia with the greatest change occurring in the fovea. New ommatidia are added to the fovea medially, and old ones are removed laterally as their interommatidial angles and directions of view in the visual field change. Over one-third of the aeshnid ommatidia are foveal during at least one of the early larval instars, and are then used for peripheral vision later in development. The design of each ommatidium is a compromise so that it is adapted for all stages of development, but sometimes better adapted for one instar than for others. Factors which are balanced for best vision are lens diameter, facet admission function, interommatidial angle, and inclination of the optic axis to the eye surface. Ommatidia are described in terms of these factors throughout their life history, from initial differentiation anteriorly, through passage through the fovea, to their final relatively posterior location.
通过标记单个小眼并研究自然出现的色素带模式，对复眼的发育进行了分析。新的小眼沿着眼睛的前缘添加到眼中。这会改变较老小眼的视野方向，其中在中央凹处变化最大。新的小眼在内侧添加到中央凹，而旧的小眼随着它们在视野中的小眼间角度和视野方向的变化而在外侧被移除。在至少一个早期幼虫龄期，超过三分之一的蜓科小眼是中央凹小眼，然后在发育后期用于周边视觉。每个小眼的设计是一种折衷，以便它适应发育的所有阶段，但有时对一个龄期的适应比对其他龄期更好。为实现最佳视觉而平衡的因素包括晶状体直径、小眼面接纳功能、小眼间角度以及光轴与眼表面的倾斜度。在小眼从最初在前部的分化，经过中央凹，到其最终相对后部的位置的整个生命历程中，都根据这些因素对小眼进行描述。
