Comparison of iris parameters in angle closure eyes and normal eyes
| Iris measures | Mean (SD) in angle closure eyes (n=167) | Mean (SD) in normal eyes (n=1153) | Mean difference (95% CI)* | p Value |
| IT 750 (mm) | 0.499 (0.14) | 0.451 (0.10) | 0.048 (0.024, 0.072) | <0.001 |
| IT 2000 (mm) | 0.543 (0.13) | 0.479 (0.10) | 0.063 (0.041, 0.085) | <0.001 |
| ITM (mm) | 0.660 (0.13) | 0.602 (0.10) | 0.058 (0.036, 0.080) | <0.001 |
| I-Area (mm2) | 1.645 (0.35) | 1.570 (0.27) | 0.075 (0.015, 0.135) | 0.014 |
| I-Curv (mm) | 0.110 (0.27) | 0.260 (0.12) | −0.328 (−0.361 to −0.294) | <0.001 |
↵* Adjusted for age, sex, pupil size and anterior chamber depth.
IT750, iris thickness measured at 750 μm from the sclera spur; IT2000, iris thickness measured at 2000 μm from the sclera spur; I-Area, iris area; ITM, maximal iris thickness; I-Curv, iris curvature.