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BL-6 Chengguang (承光) — Light Guard
Depth
00.5–0.8 cun3.0
Transverse insertion
Precautions
No standard contraindications. Moxibustion only after careful diagnosis.
Location (classical)
1.5 cun lateral to the midline and 2.5 cun superior to the anterior hairline (1.5 cun posterior to BL-5).
How to find it (practical)
Seated with the head supported, first locate Qu Chai (BL-4). Locate Cheng Guang (BL-6) 2 cun directly above it.
Anatomy
Epicranial aponeurosis. Innervated by the supraorbital nerve.
Needling
Transverse (subcutaneous) insertion of 0.5–0.8 cun.
Etymology
Cheng (承), to receive; Guang (光), brightness. The point treats various ocular disorders.
CLASSICAL SOURCEJia Yi Jing
Clinical Relations
Adjacent Points on the Meridian