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  • Title: Visual acuity outcomes with SA60D3, SN60D3, and ZM900 multifocal IOL implantation after phacoemulsification.
    Author: Ngo C, Singh M, Sng C, Loon SC, Chan YH, Thean L.
    Journal: J Refract Surg; 2010 Mar; 26(3):177-82. PubMed ID: 20229949.
    Abstract:
    PURPOSE: To assess the near and distance visual acuity achieved with implantation of the ReSTOR SA60D3 and SN60D3 (Alcon Laboratories Inc) and Tecnis ZM900 (Abbott Medical Optics [AMO]) multifocal intraocular lens (IOL) after cataract surgery. METHODS: This is a retrospective study of 108 eyes of 54 patients who underwent uneventful bilateral phacoemulsification of cataract and IOL implantation at an ophthalmic center in Singapore by a single surgeon. Inclusion criteria were visually significant cataracts, corneal astigmatism <2.00 diopters, and no other ocular diseases. Patients received the SA60D3, SN60D3, or ZM900 multifocal IOL in both eyes. Binocular near and distance visual acuity outcomes were assessed 3 months after second-eye surgery. RESULTS: No difference in mean postoperative uncorrected and best spectacle-corrected visual acuity for distance among the groups was noted. The ZM900 lens was significantly better than both ReSTOR lenses for uncorrected near vision with 96.7% achieving N5 compared to 75% of SA60D3 patients and 83.3% of SN60D3 patients (P=.003). For distance corrected near vision, 100% of ZM900 patients achieved N5 compared to 83.3% for each the SA60D3 and SN60D3 IOLs (P=.005). No significant difference between both ReSTOR lenses for near vision was noted. CONCLUSIONS: All three IOLs provide similar uncorrected and best corrected distance visual acuity. However, the ZM900 IOL provides better binocular distance corrected and uncorrected near acuity than the SA60D3 or SN60D3. The ZM900 IOL group was more myopic preoperatively compared to the other two groups, which may be a contributing factor.
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