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Abstract #8114 Published in IGR 4-3
Intraocular pressure response of capsular glaucoma and primary open-angle glaucoma to selective Nd:YAG laser trabeculoplasty: a prospective, comparative clinical trial
Gracner TEuropean Journal of Ophthalmology 2002; 12: 287-292
PURPOSE: To compare the intraocular pressure (IOP) response of uncontrolled capsular glaucoma (CG) and primary open-angle glaucoma (POAG) to selective laser trabeculoplasty (SLT) in a prospective clinical trial. METHODS: Ten eyes of ten patients suffering from uncontrolled CG (CG Group) and ten eyes of ten patients with uncontrolled POAG (POAG Group) were treated with a frequency-doubled, Q-switched Nd:YAG laser (532 nm). The baseline characteristics were similar in both groups. IOP was measured before and one day, one week, and one, three six, nine, 12, 15, and 18 months after treatment. Success was defined as IOP more than 20% lower than before treatment. Any change of hypotensive medication led to the subject's exclusion from the study. The two groups were compared using the independent-sample t test for continuous variables and the log-rank test for survival analysis. A value of p > 0.05 was considered significant. RESULTS: The mean follow-up was 12.0 months (SD 5.5) for the CG group and 13.5 months (SD 4.3) for POAG (NS). No significant difference was found between the two groups for mean pretreatment IOP (23.6 mmHg 5.70 in the CG group and 22.8 mmHg 29.44 in the POAG group) or for mean IOP and mean IOP reductions during the follow-up. At all follow-up visits, IOP was reduced less in the CG group than in the POAG group (24.8% 11.15 versus 27.7% 9.91 at six months, 22.0% 6.66 versus 30.6% 6.35 at 12 months, and 31.4% 5.55 versus 35.1% 1.75 at 18 months), but the difference was significant only at 12 months. Kaplan-Meier survival analysis gave an 18-month success rate of 64% in the CG group and 78% in the POAG group, with no significant differences between the groups. CONCLUSIONS: SLT is an effective procedure for lowering IOP in CG and POAG eyes, although the effect seems to last less in CG eyes.
T. Gracner, MD, Maribor Teaching Hospital, Department of Ophthalmology, Ljubljanska 5, 2000 Maribor, Slovenia
Classification:
9.4.4.1 Exfoliation syndrome (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.4 Glaucomas associated with disorders of the lens)
12.4 Laser trabeculoplasty and other laser treatment of the angle (Part of: 12 Surgical treatment)
