Which primary channel connects to the inner and outer canthus?

The small intestine channel is the primary channel that connects to both the inner and outer canthus of the eye. In Traditional Chinese Medicine, each channel has specific pathways and associated anatomical locations. The small intestine channel begins at the ulnar side of the little finger and travels up along the arm, passing through the shoulder and neck, before connecting to the eye area. It crosses the cheek and is specifically noted to connect to the outer canthus, while its pathway influences the inner canthus as well.

This connection is significant in diagnosing and treating certain pathologies that relate to eye health and vision issues, illustrating how the channels correspond to specific organ systems and regions within the body. Understanding these pathways helps practitioners assess and support the body's interconnectedness through acupuncture and other therapeutic practices.