Comparative study on optical performance and visual outcomes between two diffractive multifocal lenses: AMO Tecnis® ZMB00 and AcrySof® IQ ReSTOR® Multifocal IOL SN6AD1

Abstract

Purpose: To compare the optical performance and visual outcomes between two diffractive multifocal lenses: AMO Tecnis® ZMB00 and AcrySof® ReSTOR® SN6AD1. Methods: This prospective, non-randomized comparative study included the assessment of 74 eyes in 37 patients referred for cataract surgery and candidates for multifocal intraocular lens implants. Exclusion criteria included existence of any other eye disease, previous eye surgery, high axial myopia, preoperative corneal astigmatism of >1.00 cylindrical diopter (D), and intraoperative or postoperative complications. Ophthalmological evaluation included the measurement of uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), distance-corrected near visual acuity (DCNVA), and distance-corrected intermediate visual acuity (DCIVA), with analysis of contrast sensitivity (CS), wavefront, and visual defocus curve. Results: Postoperative UDVA was 0.09 and 0.08 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.868); postoperative CDVA was 0.04 and 0.02 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.68); DCIVA was 0.17 and 0.54 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.000); and DCNVA was 0.04 and 0.09 logMAR in the SN6AD1 and ZMB00 groups, respectively (p=0.001). In both cases, there was an improvement in the spherical equivalent and UDVA (p<0.05). Under photopic conditions, the SN6AD1 group had better CS at low frequencies without glare (p=0.04); however, the ZMB00 group achieved better sensitivity at high frequencies with glare (p=0.003). The SN6AD1 and ZMB00 lenses exhibited similar behavior for intermediate vision, according to the defocus curve; however, the ZMB00 group showed a shorter reading distance than the SN6AD1 group. There were no significant differences regarding aberrometry between the two groups. Conclusion: Both lenses promoted better quality of vision for both long and short distances and exhibited a similar behavior for intermediate vision. The SN6AD1 and ZMB00 groups showed better results for CS under photopic conditions at low and high spatial frequencies, respectively. Keywords

Comparison of long-term decentration and tilt in two types of multifocal intraocular lenses with OPD-Scan III aberrometer

“…Previous in vitro tests indicated that the tilt of an MfIOL has a significant effect on visual quality [14], and our follow-up correlation analysis confirmed that MfIOL tilt correlated positively with the aberration value. However, in previous studies, there was no significant difference in HOAs between these two groups after a short follow-up period [4,28]. A possible explanation involves the contraction of the capsular bag, which occurs more frequently with lenses made of soft materials.…”

“…MfIOLs are designed to improve the near vision of patients after cataract surgery and potentially allow the patient to read and write. Previous studies have shown that the implantation of SN6AD1 and ZMB00 MfIOLs can improve both distance and near vision [4,10,11].…”

“…It has 32 concentric rings, with a central ring of 1 mm, and provides an additional 4.0 D, regardless of the pupil size [2,11]. Previous research has shown that +3.0 D is superior to +4.0 D in terms of the intermediate vision of the naked eye, the preferred reading distance, and the distance-corrected near vision under photopic conditions, and is more suitable for most people at a working distance [4,5,13]. These findings are similar to our results.…”

“…AcrySof® IQ ReSTOR® SN6AD1 (Alcon Laboratories, Inc., Irvine, CA, USA) and AMO Tecnis® ZMB00 (Abbott Medical Optics, Santa Ana, CA, USA) are two widely used MfIOLs. Although several studies have compared the visual quality and distant and near vision afforded by SN6AD1 and ZMB00 [4,5], there has been no comparison of the long-term central stability of these two MfIOLs after implantation.…”

<p>Patient-Reported Outcomes/Satisfaction and Spectacle Independence with Blended or Bilateral Multifocal Intraocular Lenses in Cataract Surgery</p>

“…The AcrySof IQ ReSTOR +2.5 D multifocal lens has been designed to allow better uncorrected intermediate vision and reduce glare and halos compared with previous, higher-add models. 11,[14][15][16][17][18][19][20] This lens was designed for patients who want to participate in activities requiring more intermediate (53 cm/21 in) and distance (4 m/13 ft) vision, 21 and the lens is intended to result in a lower incidence of glare because the central optic is designed for distance. A similar lens, the AcrySof IQ ReSTOR +3.0 D was designed for patients who desire a broad range of vision from 16 inches (40 cm) to distance.…”