Table 4.
Intraocular Pressure and Medical Therapy Preoperatively and Postoperatively Following Repeat Glaucoma Surgery in the Tube Versus Trabeculectomy Study
| Tube Group | Trabeculectomy Group | P-valueb | |
|---|---|---|---|
|
| |||
| Preoperative | |||
| IOP (mm Hg) | 21.3 ± 5.6 | 27.5 ± 8.6 | .078 |
| Glaucoma medications | 3.3 ± 1.2 | 2.9 ± 1.1 | .46 |
| N | 8 | 17a | |
|
| |||
| 6 months | |||
| IOP (mm Hg) | 12.2 ± 5.6 | 17.4 ± 8.1 | .35 |
| Glaucoma medications | 0 (0) | .3 ± .8 | .52 |
| N | 3 | 6 | |
|
| |||
| 1 year | |||
| IOP (mm Hg) | 11.6 ± 3.9 | 15.5 ± 5.6 | .15 |
| Glaucoma medications | 1.8 ± 1.3 | 1.1 ± 1.4 | .29 |
| N | 6 | 13 | |
|
| |||
| 2 years | |||
| IOP (mm Hg) | 15.0 ± 5.5 | 14.4 ± 6.6 | .84 |
| Glaucoma medications | 1.1 ± 1.3 | 1.4 ± 1.4 | .71 |
| N | 7 | 10 | |
|
| |||
| 3 years | |||
| IOP (mm Hg) | 8.2 ± 3.2 | 14.1 ± 6.3 | .16 |
| Glaucoma medications | 1.7 ± 1.5 | 1.2 ± 1.0 | .56 |
| N | 3 | 9 | |
|
| |||
| 4 years | |||
| IOP (mm Hg) | 7.8 ± 4.6 | 16.4 ± 4.1 | .078 |
| Glaucoma medications | 1.0 ± 1.4 | 1.8 ± 1.7 | .63 |
| N | 2 | 4 | |
|
| |||
| 5 years | |||
| IOP (mm Hg) | – | 19.6 ± 1.1 | – |
| Glaucoma medications | – | .5 ± 1.0 | – |
| N | – | 4 | |
|
| |||
| Last follow-up | |||
| IOP (mm Hg) | 13.4 ± 6.6 | 16.4 ± 7.0 | .35 |
| Glaucoma medications | 1.7 ± 1.4 | .9 ± 1.3 | .21 |
| N | 7 | 16 | |
Data presented as mean ± standard deviation.
IOP = intraocular pressure
a
IOP was not available immediately prior to reoperation in 1 patient.
b
Student t-test