Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Ciliary muscle
Medically reviewed by Min Clinic Staff | Updated: January 2026
Ciliary muscle: A circular muscle that relaxes or tightens the zonules to enable the lens to change shape for focusing.
The zonules are fibers that hold the lens suspended in position and enable it to change shape during accommodation.