What are ommatidia?

1 Answer
Jun 21, 2018

They are basic units of arthropods' eyes.

Explanation:

Ommatidia are units of arthropods' compound eyes. They look like hexagon shapes bundled together with one another. Thousands or even millions of them will form an eye of an arthropod, such as a spider.

https://en.wikipedia.org/wiki/Ommatidium