Table 1.
Baseline demographics and clinical characteristics of the study population
| Xen (n = 41) | MicroShunt (n = 41) | p‐value | |
|---|---|---|---|
| Study eye, OD, no. (%) | 21 (51%) | 21 (51 %) | 1.00 |
| Mean age ± SD, yrs | 69 ± 8 | 66 ± 9 | 0.13 |
| Gender, male, no. (%) | 20 (49%) | 21 (51%) | 0.83 |
| Race, Caucasian, no. (%) | 41 (100%) | 41 (100%) | 1.00 |
| Mean central corneal thickness ± SD, µm | 540 ± 35 | 531 ± 40 | 0.36 |
| Mean IOP ± SD, mmHg | 19.2 ± 4.4 | 20.1 ± 5.0 | 0.39 |
| Mean no. of IOP‐lowering medications ± SD | 2.5 ± 1.4 | 2.3 ± 1.5 | 0.65 |
| Number of IOP‐lowering medications, no (%) | |||
| 0 | 4 (10%) | 6 (15%) | 0.73 |
| 1 | 9 (22%) | 7 (17%) | |
| 2 | 4 (10%) | 8 (20%) | |
| 3 | 12 (29%) | 8 (20%) | |
| 4 | 11 (27%) | 11 (27%) | |
| 5 | 1 (2%) | 1 (2%) | |
| Use of oral acetazolamide, no. (%) | 7 (17%) | 5 (12%) | 0.53 |
| Glaucoma severity, no. (%) | |||
| Mild up to −6.00 dB | 14 (34%) | 11 (27%) | 0.76 |
| Moderate −6.01 dB up to −12.00 dB | 14 (34%) | 15 (37%) | |
| Advanced −12.01 dB or worse | 12 (29%) | 14 (34%) | |
| Missing | 1 (2%) | 1 (2%) | |
| History of phacoemulsification | 10 (24%) | 18 (44%) | 0.06 |
| History of laser trabeculoplasty | 15 (37%) | 19 (46%) | 0.37 |
Comparisons between treatment groups were performed using the 2‐sided Student’s t‐test for continuous variables and the chi‐square test for categorical variables.