Table 5.
Association Between Preoperative Iris Thickness and Changes in Anterior Segment Biometric Parameters After Laser Peripheral Iridotomy in Primary Angle Closure Suspects (Chinese 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) | 0.035 | 0.251 (−0.284, 0.787) | 0.236 | 0.262 (−0.158, 0.683) |
| Preoperative IT2000 (mm) | 0.001 | 0.920 (0.463, 1.377) | 0.009 | 0.715 (0.233, 1.198) | |
| Preoperative ITM (mm) | 0.339 | 0.273 (−0.274, 0.820) | 0.104 | 0.360 (−0.054, 0.775) | |
| Δ TISA500 (mm2) | Preoperative IT750 (mm) | 0.455 | −0.045 (−0.164, 0.072) | 0.234 | −0.071 (−0.185, 0.042) |
| Preoperative IT2000 (mm) | 0.679 | 0.028 (−0.102, 0.158) | 0.632 | 0.038 (−0.117, 0.195) | |
| Preoperative ITM (mm) | 0.570 | 0.035 (−0.086, 0.157) | 0.582 | 0.034 (−0.085, 0.154) | |
| Δ TISA750 (mm2) | Preoperative IT750 (mm) | 0.394 | −0.082 (−0.270, 0.104) | 0.210 | −0.120 (−0.303, 0.061) |
| Preoperative IT2000 (mm) | 0.781 | 0.029 (−0.178, 0.237) | 0.641 | 0.060 (−0.271, 0.260) | |
| Preoperative ITM (mm) | 0.528 | 0.063 (−0.130, 0.256) | 0.542 | 0.060 (−0.131, 0.252) |
a
Adjusted for age, sex, 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