With the eyes looking directly forwards, which point is located 1 cun directly below the pupil, in the depression at the infraorbital foramen?

• A. St 1
• B. St 3
• C. St 2
• D. Li 20

Answer: (C)

Locating facial acupuncture points relies on fixed anatomical landmarks and a consistent gaze reference. When the eyes look straight ahead, the point that sits in the shallow depression of the infraorbital foramen, exactly 1 cun below the pupil, is the St 2 point. The infraorbital foramen is the opening in the maxilla just beneath the orbital margin, and this depression marks the position of this point along the St channel near the eye. Clinically, St 2 is used for eye-related issues and nearby facial pain. Other nearby points lie in different positions relative to the pupil or infraorbital rim, so they don’t match this precise description.