[Results of intraocular lens implantation on top of the anterior capsule in cases of phaco complications].

Unlabelled: Posterior capsule rupture during cataract extraction requires that the intraocular lens (IOL) implanted on top of the capsular bag was stable and well-centered. The objective of this study was to evaluate the results of Rayner C-flex aspheric and M-flex aspheric (United Kingdom) IOLs implantation on top of the capsular bag and their stability in patients with phaco complications.
Material and Methods: A total of 2556 phacoemulsification cases were analyzed. Posterior capsule rupture as a complication occurred in 7 cases, that is 0.27%. In all patients Rayner C-flex (5) and M-flex (6) IOLs were implanted on top of the capsular bag according to the initial calculations and with no modifications in the procedure. The 2nd-year follow-up included measurement of the corneal compensated intraocular pressure (IOP) and B-mode and 3D grey-scale ultrasound in order to assess the structures of the anterior segment and to check the position of the IOL.
Results: All surgeries yielded positive clinical results. In 2 years after the intervention uncorrected visual acuity averaged 0.7-0.13, corrected-- 0.91+0.07; clinical refraction: sphera-- +0.46 +/- 0.26 diopters, cylinder-- 0.71 +/- 0.29 diopters. The shape and other parameters of Rayner IOLs contribute to their long-term stability. Postoperative lOP in the treated eye was higher than in the fellow nonoperated eye (13.9 +/- 0.76 and 11.8 +/- 0.59 mmHg correspondingly) but the difference lied within the range of normal asymmetry.
Conclusion: The 3D ultrasound technology is an informative mean of monitoring the position of the IOL in case of its extracapsular implantation; a comparatively higher IOP in the operated eye does not exceed the range of normal asymmetry between the two eyes; Rayner C-flex and M-flex IOLs remain stable and well-centered after being implanted on top of the capsular bag.