IOP and angle widening variations (IOP in mm Hg)
| Author | Baseline IOP (mm Hg) | Last IOP (mm Hg) | IOP variation | P value | |
| Final value | Percentage | ||||
| Romito et al (7.5 years)10 | 15.9±2.62 | 14.3±2.18 | −1.6 | 10% | NS |
| Ritch (6 years)9 | 18.0±4.5 | 18.2±4.5 | +0.2 | 1% | 0.38 |
| Peterson et al (6 years)4 | 21.3±7.1 | 18.3±3.2 | −3.0 | 14% | ND |
| Peterson et al (1 year)4 | 21.3±7.1 | 16.9±3.3 | −4.4 | 20% | 0.012 |
| Ramakrishnan et al (1 year)16 | 24.4±5.6 | 16.5±5.4 | −7.9 | 32% | <0.001 |
| Junqueira et al (1 year)11 | 17.9±4.9 | 14.5±4.2 | −3.4 | 19% | <0.01 |
| Singh et al (1 year)12 | 20.6±4.8 | 17.8±3.8 | −2.8 | 13% | <0.1 |
| Gomes Prado et al (1 year)13 | 18.2±4.7 | 14.6±3.8 | −3.6 | 20% | <0.01 |
| Ouazzani et al (1 month)15 | 21.1 | 14.4 | −3.4 | 19% | ND |
n years indicate follow-up time.
IOP, intraocular pressure; ND, not done.