[<i>SUN Yuanzheng</i>'s experience with <i>yuan</i>-primary and <i>luo</i>-connecting meridian-regulating acupuncture for diabetic retinopathy].

This paper summarizes Professor <i>SUN Yuanzheng</i>'s academic thought and clinical experience in treating diabetic retinopathy (DR) with <i>yuan</i>-primary and <i>luo</i>-connecting meridian-regulating acupuncture. Professor <i>SUN</i> considers that the fundamental cause of DR lies in visceral dysfunction, with stagnation in the ocular collateral vessels and impairment of the mysterious orifices being the core pathogenesis. He proposes the treatment model of "regulating viscera, unblocking ocular collaterals, and opening mysterious orifices" based on <i>yuan</i>-primary and <i>luo</i>-connecting meridian-regulating acupuncture. <i>Yuan</i>-primary and <i>luo</i>-connecting points are used to balance <i>qi</i>, blood, <i>yin</i>, and <i>yang</i> of the viscera. Baihui (GV20) is stimulated with transcranial repetitive acupuncture to activate the yang <i>qi</i> of the governor vessel and invigorate <i>qi</i> in the twelve meridians, improving systemic microcirculation. Combining this with stimulation of ocular areas, Fengchi (GB20), and periocular points, the stasis in the ocular collaterals are cleared and the mysterious orifices are unblocked, addressing both the root and manifestations of DR.