AIM: To investigate diabetic choroidal hemodynamics in order to provide valuable theories for preventing and treating diabetic retinopathy(DR)and make compensation for the ocular disease of diabetes mellitus(DM).

METHODS: Color Doppler flow imaging(CDFI)was used to quantitate peak systolic velocity(PSV), end diastolic velocity(EDV)and resistence index(RI)of the ophthalmic artery(OA), the temporal posterior ciliary artery(PCA₁), and nasal posterior ciliary artery(PCA₂), in the control group(15 patients)and 45 DM patients. Statistic software was used to analysis the hemodynamic parameters.

RESULTS: Relative to the control, the EDV, PSV and RI have changed in non-diabetic retinopathy(NDR), non- proliferative diabetic retinopathy(NPDR)and proliferative diabetic retinopathy(PDR), and the differences are more evident according to the severity of DR.

CONCLUSION: We conserved the choroidal circulatory properties of DM. CDFI is very valuable to evaluate the hemodynamic changes in diabetic eyes, and has important significance in the early impression of diabetic choroidopathy.