Table 1.

Initial draft of the search strategy with PubMed as an example.

Number	Search items
#1	Diabetic Retinopathy[Title/Abstract]
#2	Diabetic Retinopathies[Title/Abstract]
#3	Diabetic eye disease[Title/Abstract]
#4	#1 OR #2 OR #3
#5	Acupoint injection [Title/Abstract]
#6	Point injection [Title/Abstract]
#7	Acupuncture point injection [Title/Abstract]
#8	#5 OR #6 OR #7
#9	Randomized controlled trial[Title/Abstract]
#10	Controlled clinical trial [Title/Abstract]
#11	Randomized [Title/Abstract]
#12	Randomly [Title/Abstract]
#13	Clinical Trials [Title/Abstract]
#14	#9 OR #10 OR #11 OR #12 OR #13
#15	#4 AND #8 AND #14