1. Cheung N, Mitchell P, Wong TY. Diabetic retinopathy. Lancet. 2010; 376:124–136.
2. Yun JS, Lim TS, Cha SA, Ahn YB, Song KH, Choi JA, Kwon J, Jee D, Cho YK, Park YM, Ko SH. Clinical course and risk factors of diabetic retinopathy in patients with type 2 diabetes mellitus in Korea. Diabetes Metab J. 2016; 40:482–493.
3. Rhee SY, Chon S, Kwon MK, Park IeB, Ahn KJ, Kim IJ, Kim SH, Lee HW, Koh KS, Kim DM, Baik SH, Lee KW, Nam MS, Park YS, Woo JT, Kim YS. Prevalence of chronic complications in Korean patients with type 2 diabetes mellitus based on the Korean National Diabetes Program. Diabetes Metab J. 2011; 35:504–512.
4. Park S, Rhee SY, Jeong SJ, Kim K, Chon S, Yu SY, Woo JT. Features of long-standing Korean type 2 diabetes mellitus patients with diabetic retinopathy: a study based on standardized clinical data. Diabetes Metab J. 2017; 41:393–404.
5. Cho EH, Shin D, Cho KH, Hur J. Prevalences and management of diabetes and pre-diabetes among Korean teenagers and young adults: results from the Korea National Health and Nutrition Examination Survey 2005-2014. J Korean Med Sci. 2017; 32:1984–1990.
6. Diabetes Control and Complications Trial Research Group. Nathan DM, Genuth S, Lachin J, Cleary P, Crofford O, Davis M, Rand L, Siebert C. The effect of intensive treatment of diabetes on the development and progression of long-term complications in insulin-dependent diabetes mellitus. N Engl J Med. 1993; 329:977–986.
7. Lee R, Wong TY, Sabanayagam C. Epidemiology of diabetic retinopathy, diabetic macular edema and related vision loss. Eye Vis (Lond). 2015; 2:17.
8. Sharp PS, Fallon TJ, Brazier OJ, Sandler L, Joplin GF, Kohner EM. Long-term follow-up of patients who underwent yttrium-90 pituitary implantation for treatment of proliferative diabetic retinopathy. Diabetologia. 1987; 30:199–207.