primary iris cell

例句：

1. 1. The primary iris cell is responsible for transmitting light through the eye.
   初级虹膜细胞负责通过眼睛传输光线。
2. 2.Researchers have identified several genes that play a role in determining the color of the iris.
   研究人员已经确定了几个基因，它们在决定虹膜颜色方面发挥作用。
3. 3.In some cases, the primary iris cell may be damaged or absent, leading to vision problems.
   在某些情况下，初级虹膜细胞可能受损或缺失，导致视力问题。