The intraclass correlation coefficients (ICC) and their 95% confidence interval (CI) of within observer (observer A) and between observers (observer A − observer B) in measuring vertical cup-disc ratio, horizontal cup-disc ratio and perimeter cup-disc ratio by Discam
| Vertical cup-disc ratio | Horizontal cup-disc ratio | Perimeter cup-disc ratio | |
|---|---|---|---|
| ICC (95% CI) | ICC (95% CI) | ICC (95% CI) | |
| Within observer (observer A) | 0.93 (0.86–0.96) | 0.90 (0.80–0.94) | 0.93 (0.77–0.97) |
| Between observers (observer A − observer B) | 0.70 (0.56–0.80) | 0.67 (0.50–0.78) | 0.69 (0.54–0.80) |