Ophthalmologyniche
A 54-year-old Aboriginal man attends his general practice in a regional town for a diabetes review. Type 2 diabetes was diagnosed four years ago. His HbA1c is 52 mmol/mol (6.9%), blood pressure is 124/78 mmHg and estimated glomerular filtration rate is 88 mL/min. He has never smoked and takes metformin alone. Retinal photographs taken at the practice a year ago were reported as showing no retinopathy, and he has no visual symptoms. Which one of the following intervals should be used for his next retinal examination?