Question

Which are the structural units of compound eye?

Answer 1

The compound eye is excellent at detecting motion. As an object moves across the visual field, ommatidia are progressively turned on and off. Because of the resulting "flicker effect", insects respond far better to moving objects than stationary ones. Honeybees, for example, will visit wind-blown flowers more readily than still ones.

Answer 2

Ommatdia are the main compound for eye

As visual field gets on and off the ommatadia proportionate with it