TABLE 3.
Comparison of the IAD in Healthy Controls and Unilateral Glaucoma Patients
| Variables | Healthy Controls | Unilateral Glaucoma | P* |
|---|---|---|---|
| Refractive error (D) | 0.13±0.21 | 0.21±0.28 | 0.427 |
| Axial length (mm) | 0.38±0.76 | 0.21±0.24 | 0.210 |
| Central corneal thickness (μm) | 8.36±7.34 | 8.90±8.48 | 0.736 |
| Baseline IOP (mm Hg) | 1.38±1.31 | 3.44±6.79 | 0.019 |
| Mean follow-up IOP (mm Hg) | 1.15±1.03 | 1.68±2.29 | 0.105 |
| IOP fluctuation (mm Hg) | 0.35±0.77 | 0.63±0.84 | 0.075 |
| ONH characteristics | |||
| Horizontal tilt (deg.) | 6.64±7.05 | 6.11±5.97 | 0.686 |
| Vertical tilt (deg.) | 6.31±6.14 | 8.11±8.29 | 0.198 |
| Disc torsion (deg.) | 9.31±9.97 | 10.26±9.69 | 0.626 |
| β zone PPA (μm) | 116.96±98.90 | 116.83±110.60 | 0.995 |
| γ zone PPA (μm) | 121.81±156.21 | 77.06±67.60 | 0.080 |
| Lamina depth (μm) | 90.59±82.81 | 96.21±90.04 | 0.741 |
| Lamina thickness (μm) | 54.26±39.61 | 53.79±38.37 | 0.951 |
| Anterior scleral canal opening (mm) | 0.20±0.37 | 0.12±0.09 | 0.170 |
| Posterior pole characteristics | |||
| Disc-DPE distance (mm) | 0.92±0.81 | 1.02±1.22 | 0.626 |
| Disc-DPE depth (μm) | 26.13±53.64 | 28.53±46.84 | 0.812 |
| PP-CSA (mm2) | 4.13±7.14 | 5.95±9.52 | 0.259 |
| PP-HW (mm) | 1.26±1.53 | 1.99±2.06 | 0.036 |
| PP-VW (mm) | 1.25±1.49 | 1.42±1.73 | 0.570 |
Data are presented as mean±SD unless otherwise indicated. For each parameter, intereye absolute difference (IAD) was calculated by converting all left eye data to the right eye configuration and subtracting the right eye value from that of the left eye.
*Independent t test for continuous variables.
Statistically significant values (P<0.05) are shown in bold.
CSA indicates cross-sectional area; DPE, deepest point of eye; HW, horizontal width; IOP, intraocular pressure; ONH, optic nerve head; PP, posterior pole; PPA, peripapillary atrophy; VW, vertical width.