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Time to next visit (years) as a function of the current state such that the risk of reaching PDR/CSME is approximately 5% for various values of HbA1c, along with the average undetected time 
(years) and the expected number of visits 
| HbA1c (%) | No retinopathy | Mild NPDR | Moderate NPDR | Severe NPDR |
|
|
|---|---|---|---|---|---|---|
| 6 | 14.41 | 11.91 | 0.58 | 0.41 | 3.05 | 2.11 |
| 8 | 6.08 | 4.33 | 0.41 | 0.08 | 1.12 | 5.77 |
| 10 | 3.16 | 2.08 | 0.25 | 0.08 | 0.42 | 14.46 |
