Effect of postprandial hyperglycemia at clinic visits on the incidence of retinopathy in patients with type 2 diabetes: An analysis using real‐world long‐term follow‐up data

Abstract Aims/Introduction There is little evidence on the role of postprandial glycemia in the incidence of diabetic retinopathy (DR) in a real‐world setting. We aimed to assess the effect of postprandial hyperglycemia at clinic visits on the incidence of DR in patients with type 2 diabetes, and whether its effect differs depending on glycated hemoglobin (HbA1c) values and age. Materials and Methods Intrapersonal mean blood glucose levels at 1–2 h post‐breakfast (1–2h‐PBBG), post‐lunch (1–2 h‐PLBG) and both (1–2h‐PBLBG) during 2 years from the first visit were used as baseline data. This retrospective cohort study enrolled 487, 323 and 406 patients who had 1–2h‐PBLBG, 1–2h‐PBBG and 1–2h‐PLBG measurements, respectively. These three groups were followed from 1999 up through 2017. Results DR occurred in 145, 92 and 126 patients in the 1–2h‐PBLBG, 1–2h‐PBBG and 1–2h‐PLBG groups, respectively. Multivariate Cox regression analysis showed that the mean 1–2h‐PBLBG, 1–2h‐PBBG and 1–2h‐PLBG levels were significant predictors of DR, independent of mean HbA1c. In patients with mean HbA1c