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Alternate names: 足少阳之络 zú shào yáng zhī luò,

Channel: GB, foot lesser yáng (shào yáng) gallbladder channel

Modern location: An acupoint located on the lateral aspect of the lower leg, 5 cùn superior to the tip of the lateral malleolus, on the anterior edge of the peroneus brevis muscle.

Classical location: Five cùn above the outer ankle. From The Great Compendium of Acupuncture and Moxibustion (针灸大成 zhēn jiǔ dà chéng)

Local anatomy: The branches of the anterior tibial artery and vein. The superficial peroneal nerve.

Action: Regulates the liver and brightens the eyes; dispels wind and disinhibits dampness.

Modern indications: Eye pain; night blindness; distension and pain of the breast; wilting-impediment (wěi bì) of the lower limbs.

Classical indications: Heat effusion and aversion to cold with absence of sweating; withdrawal disease; itching of the eyes; retention of rabid dog bite toxin; pigeon chest in infants; grinding of the teeth.

Needle stimulus: Needling: 0.7‒1.0 cùn perpendicular insertion. Moxa: 3‒5 cones; pole 5‒20 min.

Point groups: Network (luò) point.

Point name meaning:

• 光 guāng: light, brightness
• 明 míng: clear, bright; acute (of eyesight)

Both the characters 光 (guāng) and 明 (míng) are often used to describe the eyes (e.g., 道藏： 左目神，字英明，右目神，字玄光). GB-37 is the network (luò) point of the gallbladder channel, i.e., the spot where the network vessel that joins the liver leaves the main channel. Because of this connection (the liver opens at the eyes), GB-37 is useful in treating eye diseases. It can restore the light of the eyes, and is therefore called Bright Light. See acupoint names: origins, meanings, and translations.

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