Answer :
Final answer:
The two body systems involved in focusing light onto the retina are the Nervous and Muscular systems.
Explanation:
The two body systems involved in the interaction of light being focused onto the retina of the eye are the Nervous and Muscular systems.
The Nervous system plays a crucial role in controlling the movement of the eye's lens through signals sent from the brain to the muscles involved in adjusting the lens shape. This ensures that light is properly focused onto the retina. The control of these muscles by the nervous system allows us to see objects at different distances.
Learn more about Eye anatomy and physiology here:
https://brainly.com/question/15410500
