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목적 : To identify the prevalence of anterior type of nonproliferative diabetic retinopathy (NPDR) using ultra-widefield fluorescein angiography (UWFA) and its related factors.
방법 : The medical records of 206 patients (206 eyes) diagnosed as NPDR and examined by UWFA between 2012 and 2013 were evaluated. Based on imaginary circle which was bordered by ETDRS 7 standard fields, the eyes was classified into three categories, anterior type, diffuse type and posterior type. Data on gender, age, duration of diabetes, stage of diabetic retinopathy, best corrected visual acuity, presence of macular edema, medical records of other ocular pathology and blood tests were analyzed.
결과 : Two hundred six eyes from 206 NPDR patients with different stages were enrolled. As a whole, anterior type was noted in 22 eyes (10.7%); 7/25 eyes of mild NPDR, 4/42 eyes of moderate NPDR and 11/139 eyes of severe NPDR. HbA1c in anterior type was significantly lower than those in other types (6.99 ± 1.14 % in anterior type, 7.95 ± 1.31 % in diffuse type, 7.82 ± 1.35 % in posterior type, p < 0.05) and HDL-C was significantly higher than other types (55.56 ± 13.77 mg/dL in anterior type, 45.18 ± 12.40 mg/dL in diffuse type, 50.11 ± 16.76 mg/dL in posterior type, p < 0.05).
결론 : In the UWFA based classification, anterior type was noted in about 10% of NPDR. The anterior type was correlated with favorable blood sugar and lipid profile. Long-term prospective observation is mandatory.
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