Which extra point can be treated with moxa for superficial visual obstructions?

The extra point located at the apex of the ear when folded is known for its effectiveness in treating superficial visual obstructions. In Traditional Chinese Medicine (TCM), this point is associated with the function of clearing heat and alleviating conditions that affect vision, such as superficial visual obstructions. Moxibustion can be applied here to warm the area, promoting circulation and reducing any blockage that may be contributing to visual disturbances.

This choice aligns with TCM principles that emphasize the connection between various parts of the body and particular functions or symptoms, as well as the use of moxa to invigorate and restore balance to energy channels, particularly those related to the eyes.

Other choices, while potentially useful for different purposes or conditions, do not specifically target superficial visual obstructions in the same way. Thus, the apex of the ear stands out as the most appropriate option for this treatment goal.