Comparison Of The Stability Of Two Intraocular Lenses In Primary Angle-Closure Glaucoma After Phacoemulsification

Objective. To observe the stability of intraocular lenses (IOLs) in primary angle-closure glaucoma by ultralong scan depth spectral-domain optical coherence tomography (UL-OCT) after phacoemulsification. Methods. A prospective, randomized study. 73 patients (82 eyes) with primary closed-angle glaucoma and age-related cataract were included in the study. 42 eyes were implanted with ZCB00, while 40 eyes were implanted with Softec HD after phacoemulsification. The tilt, decentration, and space between IOL and posterior capsule (IOL-PC space) were analyzed using UL-OCT at 1 week, 1 month, and 3 months after surgery. The intergroup difference was compared with the paired t-test. Result. The difference of decentration and tilt was not statistically significant (both P>0.05) both in the horizontal and vertical positions at 1 week, 1 month, and 3 months postoperatively. The horizontal IOL-PC space is 0.111 +/- 0.091 mm(2), 0.044 +/- 0.066 mm(2), and 0.055 +/- 0.055 mm(2) in the Softec HD group and 0.458 +/- 0.488 mm(2), 0.497 +/- 0.363 mm(2), and 0.492 +/- 0.441 mm(2) in the ZCB00 group. The vertical IOL-PC space is 0.102 +/- 0.061 mm(2), 0.037 +/- 0.052 mm(2), and 0.053 +/- 0.079 mm(2) in the Softec HD group and 0.692 +/- 0.815 mm(2), 0.510 +/- 0.415 mm(2), and 0.691 +/- 0.635 mm(2) in the ZCB00 group. The difference was statistically significant (P<0.05) both in the horizontal and vertical positions except for the first week on the horizon. The Softec HD group is smaller than the ZCB00 group. Conclusion. There is no difference in the stability of the IOL although the IOL-PC space is different. The thickness of IOL may affect the IOL-PC space.