Table 5.
Intraocular Pressure and Medical Therapy at Baseline and Follow-up in the PTVT Study
| Tube Group | Trabeculectomy Group | P-value* | |
|---|---|---|---|
| Baseline | |||
| IOP (mmHg) | 23.3 ± 4.9 | 23.9 ± 5.7 | 0.35 |
| Glaucoma medications | 3.1 ± 1.1 | 3.2 ± 1.1 | 0.56 |
| N | 125 | 117 | |
|
| |||
| 1 year | |||
| IOP (mmHg) | 13.8 ± 4.1 | 12.4 ± 4.4 | 0.012 |
| Glaucoma medications | 2.1 ± 1.4 | 0.9 ± 1.4 | < 0.001 |
| N | 108 | 105 | |
|
| |||
| 18 months | |||
| IOP (mmHg) | 13.5 ± 4.1 | 12.8 ± 4.7 | 0.33 |
| Glaucoma medications | 2.1 ± 1.3 | 0.8 ± 1.3 | < 0.001 |
| N | 99 | 97 | |
|
| |||
| 2 years | |||
| IOP (mmHg) | 13.6 ± 3.9 | 12.9 ± 5.2 | 0.28 |
| Glaucoma medications | 2.2 ± 1.0 | 1.0 ± 1.5 | < 0.001 |
| N | 99 | 96 | |
|
| |||
| 3 years | |||
| IOP (mmHg) | 13.9 ± 4.2 | 12.1 ± 4.8 | 0.010 |
| Glaucoma medications | 2.1 ± 1.4 | 1.2 ± 1.5 | < 0.001 |
| N | 87 | 88 | |
|
| |||
| 4 years | |||
| IOP (mmHg) | 13.5 ± 3.5 | 13.5 ± 5.4 | 0.98 |
| Glaucoma medications | 2.3 ± 1.4 | 1.3 ± 1.4 | < 0.001 |
| N | 83 | 79 | |
|
| |||
| 5 years | |||
| IOP (mmHg) | 13.4 ± 3.5 | 13.0 ± 5.2 | 0.52 |
| Glaucoma medications | 2.2 ± 1.3 | 1.3 ± 1.4 | < 0.001 |
| N | 74 | 75 | |
IOP = intraocular pressure
Data are presented as mean ± standard deviation
Data censored after a reoperation for glaucoma
*
Student t-test