Table 4

Comparison of iris parameters between subgroups of angle closure versus normal controls

MeasuresPAC (n=50)PACG (n=73)Fellow eyes of APAC (n=44)Normal (n=1153)
Valuesp Value*Valuesp Value*Valuesp Value*
IT 750, mm, mean (SD)0.51 (0.25)<0.0010.46 (0.11)0.0860.49 (0.14)0.0010.45 (0.08)
IT 2000, mm, mean (SD)0.55 (0.24)<0.0010.50 (0.11)0.0010.52 (0.14)0.0010.48 (0.08)
ITM, mm, mean (SD)0.67 (0.24)<0.0010.63 (0.13)<0.0010.63 (0.15)0.0100.60 (0.07)
I-Area, mm2, mean (SD)1.70 (0.47)0.0031.56 (0.34)0.0741.59 (0.67)0.6401.57 (0.23)
I-Curv, mm, mean (SD)0.10 (0.36)<0.0010.11 (0.24)<0.0010.11 (0.18)<0.0010.26 (0.12)

  • ↵* Multivariate adjusted for age, sex, pupil size and anterior chamber depth, compared to normal eyes.

  • ACD, 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; PAC, primary angle closure; PACG, primary angle closure glaucoma; APAC, acute primary angle closure