2Asist. Dr., S.B. Ulucanlar Göz Eğitim Hastanesi, Ankara - TÜRKİYE
3Prof. Dr., S.B. Ulucanlar Göz Eğitim Hastanesi, Ankara - TÜRKİYE Purpose: To compare the effect of trabeculectomy on anterior segment parameters measured by optical biometry in cases with primary open-angle glaucoma (POAG) and pseudoexfoliation glaucoma (PXG).
Material and Methods: Nineteen eyes of 19 cases with POAG and 20 eyes of 20 cases with PXG were included to this prospective parallel-group trial. All the cases had uncomplicated trabeculectomy. Central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT) and axial length (AL) measurements were done by optical biometer before the surgery and at the 1st and 3rd postoperative months. The postoperative differences were compared statistically by t test, Kolmogorov- Smirnov test and chi-square tests.
Results: In POAG, intraocular pressure (IOP) and ACD decreased (p<0.001, p<0.001) at the 1st and 3rd months signifi cantly. LT increased signifi cantly (p=0.04, p=0.001), but there were no signifi cant changes in CCT and AL. In PXG, IOP decreased (p<0.001, p<0.001) and ACD decreased (p<0.001, p=0.003) at the 1st and 3rd months signifi cantly. CCT increased at the 1st month (p=0.025), LT increased at the 1st and 3rd months (p=0.023, p=0.009) signifi cantly. There were no signifi cant changes in AL at the 1st and 3rd months and CCT at the 3rd month. There were no signifi cant differences in the postoperative changes between the two groups. Signifi cant but minimal myopic shifts in spherical equivalent values were observed postoperatively in both groups.
Conclusion: Trabeculectomy cause some differences in anterior segment parameters in both POAG and PXG cases and the differences between these changes in both groups were found to be insignifi cant.
Keywords : Primary open-angle glaucoma, pseudoexfoliation glaucoma, trabeculectomy, optical biometry, anterior segment