Fig. 3

Location of acupoints. BL2, Cuanzhu, on the medial end of the eyebrow; GB14, Yangbai, directly above the pupil, 1 cun above the midpoint of the eyebrow; Shangming, in the orbital cavity and at the midpoint of the orbital margin; SJ23, Sizhukong, in the depression at the lateral end of the eyebrow; LI14, Bi’nao, at the stop of deltoid muscle on the line between LI15 (Jianyu) and Quchi (LI11), 7 cun above Quchi (LI11); Sham LI14, 1 cm backward to Bi’nao; SJ5, Waiguan, on the line joining Yangchi (SJ4) and the tip of elbow, 2 cun above the dorsocarpal transverse crease between the ulna and radius; KI6, Zhaohai, in the depression directly below the tip of the medial malleolus