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Prospective analysis of visual outcomes using apodized, diffractive multifocal intraocular lenses following phacoemulsification for cataract or clear lens extraction
Author(s) -
Altaie Rasha,
Ring C Peter,
Morarji Jasha,
Patel Dipika V,
McGhee Charles NJ
Publication year - 2012
Publication title -
clinical and experimental ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 1442-6404
DOI - 10.1111/j.1442-9071.2011.02671.x
Subject(s) - medicine , multifocal intraocular lens , ophthalmology , visual acuity , intraocular lens , phacoemulsification , apodization , lens (geology) , pupil , dioptre , cataract surgery , optometry , optics , physics
A bstract 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.