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Two‐year follow‐up after implantation of diffractive aspheric silicone multifocal intraocular lenses
Author(s) -
Yoshino Mami,
BissenMiyajima Hiroko,
Oki Shinichi,
Minami Keiichiro,
Nakamura Kunihiko
Publication year - 2011
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2009.01792.x
Subject(s) - multifocal intraocular lens , dioptre , medicine , ophthalmology , intraocular lens , pseudophakia , intraocular lenses , optometry , refraction , phacoemulsification , visual acuity , optics , physics
. Purpose: To evaluate the stability of visual performance after implantation of a diffractive aspheric silicone multifocal intraocular lens (MIOL). Methods: Thirty eyes of 15 patients received the Tecnis MIOL ZM900 ( Abbot Medical Optics ) after cataract extraction at Tokyo Dental College Suidobashi Hospital. The uncorrected and best‐corrected distance visual acuities (UCDVA, BCDVA); uncorrected, distance‐corrected and best‐corrected near VAs (UCNVA, DCNVA and BCNVA); spherical equivalent refraction, spectacle independence, contrast sensitivity and posterior capsule opacification (PCO) were measured at 1 week; 1, 3 and 6 months; and 1 and 2 years postoperatively. Results: Two years postoperatively, the UCDVA was 0.01 logMAR, BCDVA −0.09 logMAR, UCNVA 0.19 logMAR, DCNVA 0.1 logMAR and BCNVA 0.04 logMAR. There was no significant change from 1 week through 2 years. The percent of spherical equivalent refraction error within ± 0.5 diopter was 63.4% at 2 years. No patient required spectacles for reading; two patients have used spectacles for intermediate vision when necessary. One eye underwent Nd:YAG laser posterior capsulotomy because of PCO. Conclusion: The visual performance after implantation of the Tecnis MIOL was stable for 2 years. A low rate of PCO contributed to the long‐term visual performance.