Glokom-Katarakt
2007 , Vol 2 , Num 3
Comparision of Central Corneal Thickness Between Patients with Pseudoexfoliation Syndrome and Normal Subjects After Phacoemulsification Surgery
1S.B. Ankara Ulucanlar Göz Eğitim Hastanesi II. Göz Kliniği, Ankara, Uzm. Dr.2Hacettepe Üniversitesi Biyoistatistik A.D., Ankara, Araş. Gör. Dr.
3S.B. Ankara Ulucanlar Göz Eğitim Hastanesi II. Göz Kliniği Şefi, Ankara, Uzm. Dr. Purpose: To compare the central corneal thickness (CCT) measurements of the cases with pseudoexfoliation syndrome (PXS) and normal subjects after uncomplicated phacoemulsification surgery.
Materials and Methods: 31 normal subjects (Group 1) and 29 cases with PXS (Group 2) who had undergone uncomplicated phacoemulsification surgery between December 2005 and November 2006, were included to our prospective study. The preoperative and postoperative CCT values, total phaco time (TPT), effective phaco time (EPT) and the amount of ultrasonic energy used in the surgery were recorded. The postoperative increases in CCT between the two groups were compared. Also, the correlation between the postoperative increases in CCT, phaco time and the amount of ultrasonic energy used in the surgery were investigated. For statitistical analysis Shapiro Wilks test, chi-square test, t-test, paired samples t-test, correlation analysis, variance analysis in repeated measures were used.
Results: TPT of group 1 was 72.1±46.3 sec (18-176 sec) and it was 87.9±49.5 sec (40-210 sec) in group 2. EPT in group 1 was 19.4±14.9 sc (2.7-67 sec) and it was 23.5±14. 6 sec (6.2-57 sec) in group 2. The differences between the two groups were not significant (p=0.20, p=0.28). The CCT increased in all of the cases in early postoperative period, but it reduced to normal values in the first postoperative month in normal subjects and third postoperative month in the cases with PXS. The postoperative CCT values and the amount of the increase (%) in CCT were significiantly high in group 2 (p=0.023). Also, greater correlations between the postoperative CCT, TPT and EPT were detected in group 2 than group 1. The ages of the cases were found to have no effect on postoperative CCT (p=0.99).
Conclusion: It was found that longer period of time was needed for resolution of the postoperative corneal edema in cases with PXS. Postoperative increase in CCT was also found to be more in these cases. Keywords : Pseudoexfoliation syndome, phacoemulsification time, central corneal thickness
