Which two sinew channels are known to circle the eye?

The sinew channels, also known as sinew meridians, are pathways associated with the muscular system and are involved in the connection of the body's muscles and tendons. In the context of the question regarding which two sinew channels circle the eye, the correct answer is the Stomach (ST) and Urinary Bladder (UB) channels.

The Stomach channel runs from the face down to the toes, and it encircles the eye, providing support and movement to the facial and extraocular muscles. Similarly, the Urinary Bladder channel also traverses around the eye area, impacting muscles and tendons in the surrounding regions. These channels play critical roles in both movement and sensory functions around the eyes, which is why they are noted for encircling the eye.

Understanding the anatomical pathways of these channels is crucial for practitioners, particularly in diagnosing and treating conditions that manifest with symptoms around the eye area, such as head and eye strain. The interplay between the ST and UB channels in this region exemplifies the holistic nature of traditional Chinese medicine, where muscle and organ interactions are considered essential for overall health.