Comparisons between patients with NDR and DR, patients with NPDR and PDR.

*comparison among groups showed significant difference.Abbreviations in the tables: NDR: non diabetic retinopathy; NPDR: non-proliferative diabetic retinopathy; PDR: proliferative diabetic retinopathy; BMI: body mass index; SBP: systolic blood pressure; DBP: diastolic blood pressure; HbA1c: hemoglobin A1c; UA: uric acid; CRE: creatinine; CHO: cholesterol; TG: triglyceride; HDL-C: high density lipoprotein cholesterol; LDL-C: low density lipoprotein cholesterol; FT4: free thyroxine; FT3: free triiodothyronine; TSH: Thyroid-stimulating hormone; ACR: urine albumin creatinine ratio.