Acupuncture and moxibustion treatment of neurogenic,myogenic and mechanical blepharoptosis has good clinical efficacy,but mostly local acupoint selection."Three-segment acupoint selection method"divides the top to the sole into three segments:upper,middle and lower,upper limbs and head and neck above,trunk to waist to middle,lower waist to lower.Based on the theory of"intersection of tendons and veins",combined with meridian circulation,pathogenesis of traditional Chinese medicine and modern neuroanatomy theory,this paper explores the theoretical basis of the application of"three-segment acupo...