The stability of intraocular lenses in primary angle-closure glaucoma after phacoemulsification / 眼科新进展

ABSTRACT

Objective To observe the stability of intraocular lens (IOL) in primary angle-closure glaucoma by ultra-long scan depth spectral domain optical coherence tomography (UL-OCT) after the phacoemulsification.Methods Totally 42 patients (42 eyes) with primary closed-angle glaucoma (PACG) and age-,gender-matched 40 patients (40 eyes) with age-related cataract were included in the study.All of patients underwent phacoemulsification combined with softec HD IOL implantation.Images were obtained by UL-OCT in 1 week,1 month and 3 months after the surgery for the calculation and analysis of the IOL decentration,tilt and the space between IOL and posterior capsule (IOL-PC space).And finally the intergroup differences at the different time-points were compared with the independent sample t test.Results The IOL decentration after 1 week,1 month and 3 months was (0.182 ± 0.054) mm,(0.232 ±0.081)mm,(0.183 ±0.089) mm in the PACG group,and (0.342 ± 0.141)mm,(0.288 ±0.110)mm,(0.249 ± 0.132)mm in the ARC group.There was statistically significant difference in IOL decentration 1 week after surgery between the two groups (P =0.006),but the differences in this variable at the other two time-points between the two groups were not statistically significant (both P ＞ 0.05).The tilt on the vertical axis at 1 week,1 month and 3 months after surgery was (3.670 ± 6.610) °,(-0.940 ± 4.730) °,(0.540±9.510)° in the PACG group,and (-4.090±7.610)°,(-5.100±5.530)°,(-1.430 ± 8.800) ° in the ARC group.The tilt on the vertical axis of the PACG group was less than that of the ARC group at 1 week after surgery,with statistical difference (P =0.025),but there was no significant difference in this variable at the other two time-points (both P ＞ 0.05).Moreover,the tilt on the horizontal axis showed no statistically significant differences (all P ＞ 0.05).The IOL-PC space on horizontal axis at 1 week,1 month and 3 months after surgery was (0.111 ±0.091)mm2,(0.044 ±0.066)mm2,(0.055 ±0.055) mm2 in the PACG group,and (0 176 ±0.213) mm2,(0.255 ±0.303) mm2,(0.059 ± 0.066) mm2 in the ARC group.The IOL-PC space on horizontal axis of the PACG group was less than that of the ARC group at 1 month after surgery,with statistical difference (P =0.045),but there was no significant difference in this variable at the other two time-points (both P ＞ 0.05).Moreover,the IOL-PC space on vertical axis showed no statistically significantdifferences (all P ＞ 0.05).Conclusion The stability of Softec IOL in the PACG group is better than that in ARC group in 3 months after phacoemulsification.