Table 1 Details of adverse events of eye acupuncture for pain conditions

Zhou J 2008 [107]

(migraine)

I: eye acupuncture

C1: eye acupuncture + body acupuncture

C2: body acupuncture

I: —

C1: fainting (2, 6.7%)

C2: fainting (1, 3.3%)

He Y 2012 [41]

(acute goutyarthritis)

I: eye acupuncture

C: body acupuncture

I: dizziness, chest distress, nausea (1, 3.4%)

C: —

Zhang XF 2012 [102]

(migraine)

I: eye acupuncture

C1: eye acupuncture + body acupuncture

C2: flunarizine hydrochloride

I: fainting (1, 3.3%)

C1: fainting (1,3.3%)

C2: dizziness (1, 3.3%)

Zhang JY 2008 [99]

(acute gouty arthritis)

I: eye acupuncture

C: Chinese herbal medicine + Indomethacin

I: abdominal discomfort (1, 3.6%)

C: abdominal discomfort (3, 10.3%)

Hu YL 2011 [42]

(primary dysmenorrhea)

I: eye acupuncture

C: ibuprofen

I: —

C: dizziness, headache, rash, nausea, vomit (9, 18%)

Chu CL 2015 [33]

(menstrual headache)

I: eye acupuncture + Chinese herbal medicine

C: Chinese herbal medicine

I: diarrhea (3, 9.4%); ecchymoma (1, 3.1%); nausea (1, 3.1%)

C: fainting (1, 3.1%); diarrhea (1, 3.1%); ecchymoma (4, 12.5%)

Wang Y 2012 [86]

(post-hemorrhoidectomy pain)

I: eye acupuncture

C: bucinperazine injection

I: analis edema (2, 4.2%); urinary retentron (1, 2.1%); nausea (1, 2.1%)

C: analis edema (1, 2.1%); urinary retentron (2, 4.2%); nausea (2, 4.2%)