Nd:YAG Capsulotomy Rates with Two Multifocal Intraocular Lenses

Abstract

Purpose:To investigate the incidence of Nd:YAG capsulotomy after implantation of two types of multifocal intraocular lenses (MIOLs). Methods: This retrospective analysis included patients who had undergone cataract extraction and implanted diffractive MIOL (Acri. LISA tri 839M) or asymmetric refractive MIOL (SBL-3) from May 2016 to September 2018. They were followed up for at least 3 years. During the followup period, the relevant data of patients were kept by special person in the hospital. The rates of Nd: YAG capsulotomy and the Kaplan-Meier survival curve were used to analyze the two groups. Results: The Asymmetric Refractive MIOL group was comprised of 98 patients (121 eyes), while the Diffractive MIOL group was comprised of 99 patients (120 eyes). There were no significant differences in age, sex, or IOL power between the two groups. The Nd:YAG rate of the asymmetric refractive MIOL group and the diffractive MIOL group was 3.3% and 7.5% respectively (P = 0.15) in the first year, 14.88% and 22.5% respectively (P = 0.129) in the second year, and 21.49% and 34.17% respectively (P = 0.028) in the third year. In the first 7 months of follow-up, the two groups showed the same performance in the Nd:YAG rate. After that, there was a difference between the two groups, and the difference gradually increased. Until the 27th month of follow-up, the difference was significant (P < 0.05). What is more, there were significant differences in survival (without Nd:YAG capsulotomy)/failure (with Nd:YAG capsulotomy) functions (P = 0.0035). Conclusion:The incidence of Nd:YAG laser capsulotomy in patients with diffractive MIOLs was higher than that in patients with asymmetric refractive MIOLs.

Geometric-phase intraocular lenses with multifocality

“…Clinical comparative study also shows that Nd:YAG-laser capsulotomy rate for PCO removal is 3 times higher for multifocal IOL implantation cases than monofocal IOL cases 24 , 25 . A comparison between two multifocal lenses, diffractive and refractive MF IOLs, reveals that the incidence of Nd:YAG laser capsulotomy in patients with diffractive MF IOLs was higher than that in patients with asymmetric refractive MF IOLs, in addition the diffractive MF OL group increased faster 26 . We note that diffractive MF IOLs essentially involve more complicated, uneven surfaces than refractive MF IOLs, and the uneven surfaces are more likely to cause PCO issues by providing obviously more rooms for inhomogeneous epithelial-cell distributions.…”