Table 3.
Association Between Preoperative Iris Thickness and Changes in Anterior Segment Biometric Parameters After Laser Peripheral Iridotomy in Primary Angle Closure Suspects (All Subjects)
| Outcome | Predictor | P Values of Univariate Regression Model | Regression Coefficients (95% CI) | P Values of Multivariate Linear Regression Modela | Regression Coefficients (95% CI) |
|---|---|---|---|---|---|
| Δ ICURV (mm) | Preoperative IT750 (mm) | 0.104 | 0.296 (−0.055, 0.647) | 0.085 | 0.335 (−0.037, 0.707) |
| Preoperative IT2000 (mm) | <0.0001 | 0.844 (0.563, 1.125) | <0.0001 | 0.941 (0.640, 1.242) | |
| Preoperative ITM (mm) | 0.022 | 0.425 (0.071, 0.778) | 0.012 | 0.491 (0.119, 0.863) | |
| Δ TISA500 (mm2) | Preoperative IT750 (mm) | 0.028 | −0.096 (−0.180, −0.012) | 0.011 | −0.118 (−0.205, −0.031) |
| Preoperative IT2000 (mm) | 0.491 | −0.031 (−0.120, 0.057) | 0.273 | −0.055 (−0.152, 0.042) | |
| Preoperative ITM (mm) | 0.654 | −0.020 (−0.111, 0.069) | 0.474 | −0.035 (−0.131, 0.609) | |
| Δ TISA750 (mm2) | Preoperative IT750 (mm) | 0.030 | −0.164 (−0.309, −0.019) | 0.012 | −0.197 (−0.347, −0.048) |
| Preoperative IT2000 (mm) | 0.263 | −0.087 (−0.240, 0.064) | 0.107 | −0.137 (−0.301, 0.026) | |
| Preoperative ITM (mm) | 0.640 | −0.037 (−0.194, 0.119) | 0.466 | −0.061 (−0.227, 0.103) |
a
Adjusted for age, sex, ethnicity, and preoperative pupil diameter.
ICURV = iris curvature, TISA500 = trabecular–iris space area at 500 μm from the scleral spur, TISA750 = trabecular–iris space area at 750 μm from the scleral spur, IT750 = iris thickness measured at 750 μm from the scleral spur, IT2000 = iris thickness measured at 2000 μm from the scleral spur, ITM = maximal iris thickness, CI = confidence interval