Eye knowledge

Do you know that visual system is related to autonomic nervous system. The visual system is closely connected to the autonomic nervous system (ANS), which controls involuntary body functions such as pupil size, focusing ability, heart rate, breathing, and stress responses. The autonomic nervous system has two main divisions: Sympathetic nervous system (“fight or flight”) Dilates the pupils Reduces accommodation (focusing effort) Increases alertness and visual scanning Can cause visual fatigue and unstable focusing when overactivated Parasympathetic nervous system (“rest and digest”) Constricts the pupils Stimulates accommodation for near tasks Supports sustained near vision activities such as reading and writing The visual system constantly interacts with the autonomic system during activities involving: Near work and prolonged screen use Eye focusing (accommodation) Eye teaming and vergence Light adaptation...