primary optic vesicle

例句：

1. 1.The development of the primary opticvesicle is crucial for visual perception.
   初级视泡的发展对于视觉感知至关重要。
2. 2.During embryonic development, the primaryoptic vesicle fuses withthe retina to form the retina.
   在胚胎发育过程中，初级视泡与视网膜融合形成视网膜。
3. 3. Researchers have discovered that theprimary optic vesicle plays a vital role in theformation of the retina.
   研究人员发现初级视泡在视网膜的形成中起着重要作用。