Table 5.
Intraclass correlation coefficients for anterior chamber parameters in a random subset of 20 eyes.
| Intraobserver | Interobserver | |||||
|---|---|---|---|---|---|---|
| Parameter | ICC (95% CI) | Overall Mean | Difference | ICC (95% CI) | Overall Mean | Difference |
| AOD500 | 0.967 (0.917, 0.987) | 0.316 | 0.004 | 0.926(0.814, 0.971) | 0.334 | −0.042 |
| TISA500 | 0.941 (0.852, 0.977) | 0.124 | 0.001 | 0.921 (0.801, 0.969) | 0.129 | −0.013 |
| IT750 | 0.946 (0.862, 0.978) | 0.425 | −0.005 | 0.974 (0.934, 0.990) | 0.431 | −0.008 |
| ARA750 | 0.967 (0.916, 0.987) | 0.254 | 0.011 | 0.925 (0.812, 0.970) | 0.265 | −0.034 |
| ACA | 0.989 (0.972, 0.996) | 24.404 | −0.342 | 0.989 (0.973, 0.996) | 24.409 | −0.352 |
| ACD | 0.934 (0.833, 0.974) | 3.568 | −0.054 | 0.934 (0.833, 0.974) | 3.569 | −0.057 |
| ACW | 0.993 (0.983, 0997) | 11.745 | 0.009 | 0.990 (0.975, 0.996) | 11.699 | 0.081 |
| ACV | 0.991 (0.978, 0.997) | 157.191 | 0.956 | 0.992 (0.980, 0.997) | 157.256 | −1.086 |
| LV | 0.997 (0.988, 0.999) | 658.148 | 18.464 | 0.986 (0.950, 0.996) | 633.587 | 67.585 |
ACA = anterior chamber angle; ACD = anterior chamber depth; ACV = anterior chamber volume; ACW = anterior chamber width; AOD500 = angle opening distance 500 μm anterior to the scleral spur; ARA750 = angle recess area 750 μm anterior to the scleral spur; CI = confidence interval; ICC = intraclass correlation coefficient; IT750 = iris thickness measured at 750 μm; LV = lens vault; TISA500 = trabecular–iris space area at 500 μm from scleral spur