Visual Outcome of New-Generation Aspheric Segmental Multifocal IOL
Narrative Responses:
Purpose
To examine visual outcomes following bilateral implantation of the second generation of a refractive aspheric segmental multifocal lens and compare it to retrospective data on the first generation IOL
Methods
40 eyes of 20 patients undergoing routine cataract surgery were implanted bilaterally with this second generation multifocal IOL. The new multifocal IOL optic features a combination of increased asphericity and a wider multifocal segment compared to the original. Data collected included uncorrected (UCVA) and corrected (BCVA) distance and near vision; subjective refraction; defocus curve testing (photopic and mesopic); contrast sensitivity (CSV-1000); halometry glare testing and a questionnaire (NAVQ) to gauge near vision function and patient satisfaction.
Results
The cohort comprised 6 males and 14 females, mean age 63 ± 12 years. Mean postop UCVA was 0.12 SD ± 0.13 (range -0.1 – 0.4) logMAR, with a mean spherical equivalent refraction -0.22D (SD ± 0.67). Mean near acuity was 0.19 logMAR (SD ± 0.16, range -0.16 - 0.6). Defocus curves show a peak near equivalent VA of 0.18 logMAR (SD ± 0.15) at -2.0 D and a distance VA of 0.00 logMAR (SD ± 0.09) at 0.0 D.
Patients showed high levels of satisfaction at near on the NAVQ (mean ± 0.9 ± 0.9) and good spectacle independence.
Conclusion
The second generation of refractive aspheric segmental multifocal lens can reduce spectacle dependence at near following cataract surgery, and provides excellent patient satisfaction with uncorrected vision.