[1]Medical Department Xianning Central Hospital(the First Affiliated Hospital of Hubei Institute of science and Technology) Xianning Hubei 437100 China;
[2]Ophthalmology Department Xianning Central Hospital(the First Affiliated Hospital of Hubei Institute of science and Technology) Xianning Hubei 437100 China;
Diabetic retinopathy of the aged; Serum vascular endothelial growth factor; Intercellular adhesion molecule; Microvascular injury;