Sheng We泣针刺时可以闭眼亦可睁眼，施针时，用左手拇指向上轻推眼球，紧靠眼眶缘缓进针，如果觉得闭眼轉眼不便，打开眼睛是可以的。 There are still some precautions to be emphasized when needling Chengsui.
6 Precautions for needling Chenggou
1. From the midpoint of the infraorbital rim to the infraorbital canal, the distance of the groove shift is an average of 10mm, and the average length of the infraorbital groove is 16mm, so when the depth of the needle is more than 10mm (0.4 inches), if the tip of the needle is close to the infraorbital wall, there is a risk of puncturing the infraorbital groove, puncturing the infraorbital artery and vein, resulting in serious bleeding, so the tip of the needle is not close to the infraorbital wall, and it will not be able to penetrate the infraorbital artery and vein. Therefore, the tip of the needle should not be close to the infraorbital wall when stabbing deeply, but slightly toward the orbital tip.
2. When the needle is inserted close to the infraorbital rim, it will not hit the eyeball, but if the needle is inserted without pressure on the eyeball, or if the needle is inserted too close to the eyeball, such accidents may occur. The outer sclera of the eyeball wall is very tough, and there is a stagnant sensation when stabbing the surface layer, as long as the needle is not too fast, it will not be pierced. However, it should be emphasized that, in the most easy to hit the eyeball of the left and right cross-sectional diameter of the largest, but also the thinnest part of the sclera, only 0.3-0.5mm, clinically, if there is a puncture in the eyeball, should be transferred to the department of treatment in a timely manner.
3. Cheng sob should not be more than 1.5 inches deep. The ophthalmic artery accompanies the optic nerve into the orbital cavity through the optic nerve foramen, initially located in the optic nerve lateral slightly inferior, later transferred to the optic nerve above, so deep stabbing Cheng sob to damage the ophthalmic artery.
4. The skin and muscle under the acupuncture point is shallow, rich in nerves and blood vessels, and there are eyeballs, so moxibustion is not conducive to the condition, and may damage the eyeballs, affecting vision or aggravate eye disease, so the acupuncture point is prohibited moxibustion.