Related Experiment Video
Updated: May 29, 2026
Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries
Published on: July 7, 2023
Prospective analysis of visual outcomes using apodized, diffractive multifocal intraocular lenses following
Rasha Altaie1, C Peter Ring, Jasha Morarji
1Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, New Zealand.
Background:
To evaluate efficacy, safety and predictability of apodized, diffractive multifocal intraocular lenses.
Design:
Prospective, observational study. PARTICIPANTS OR SAMPLE: Two hundred three patients (363 eyes) underwent surgery for cataract (54.8%) or clear lens extraction (45.2%).
Methods:
A study of consecutive patients undergoing lens extraction with insertion of the AcrySof Natural ReSTOR intraocular lens (SN60D3). Assessment included: refraction, corneal topography, biometry, monocular and binocular uncorrected and best spectacle corrected distance and near visual acuity.
Main Outcome Measures:
Visual acuity, spectacle dependence.
Results:
Mean preoperative best corrected visual acuity was 6/12 (cataract) and 6/6 (clear lens extraction). One hundred sixty-one (98.2%) of the clear lens extraction group were hyperopic and presbyopic (mean spherical equivalent +4.25±3.5D). Postoperatively uncorrected visual acuity was ≥6/12 in 96.5% of eyes (51.9% ≥6/6) and ≥ N5 in 95% of eyes. At 6 months, 182 eyes (91.4%) (cataract) and 137 eyes (83.5%) (clear lens extraction) were ≤0.50 D of target spherical equivalent. Spectacle independence was reported in 81.9% (n=168). Minor halos or other visual phenomena were reported in 10.2%. No subjects required intraocular lens exchange. Safety index at 6 months was 2.5 and 1.17 for cataract and clear lens extraction, respectively.
Conclusions:
The apodized, diffractive multifocal intraocular lens predictably provided excellent near uncorrected visual acuity and good distance uncorrected visual acuity following cataract and clear lens extraction surgery with a high rate of spectacle independence. A minority of subjects note halos and other visual phenomena that may be related to intraocular lens design.
