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KMID : 1011420130180030347
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Journal of Korean Ophthalmic Optics Society
2013 Volume.18 No. 3 p.347 ~ p.356
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Evaluation of Visual Performance for Implanted Aspheric Multifocal Intraocular Lens in the Cataract Patients
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Kim Jae-Yoon
Lee Koon-Ja
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Abstract
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Purpose: To evaluate the visual acuity and visual performance after implantation of a aspheric multifocal
(ReSTOR® SN6AD3) intraocular lens (IOL).
Methods: Nineteen cataract patients (30 eyes) implanted with an aspheric multifocal IOL (ReSTOR® SN6AD3) either unilaterally or bilaterally were participated. Visual acuity (VA) and objective optical performance were evaluated at the time of preoperation, 1 week, 1 month, and 3 month after operation. At 3 month of post-operation, objective visual performance were measured and compared with the 38 eyes of 20 age-matched normal control. Distance VA was measured by using the ETDRS LCD chart and intermediate and near visual acuity were measured using Jaeger chart. Objective visual performance was assessed preoperatively and 1 week, 1 month and 3 month postoperatively using a double-pass system (Optical Quality Analysis System) with a 4-mm pupil diameter, the OSI (objective scatter index), MTF (modulation transfer function) cut off and strehl ratio. At 3 month of post-operation, visual acuity and visual performance compared with age matched normal control.
Results: The uncorrected distance VA, OSI, MTF cut off and strehl ratio were significantly improved (p<0.05) until 1 month postoperatively. Visual performance of MTF cut off and strehl ratio after 3 month of operation were significantly improved compared to the normal control (p=0.063, p=0.103 respectively), however, OSI was higher than normal control. Patients implanted with aspheric multifocal IOL were satisfied with distance and near VA however, were unsatisfied with intermediate VA and reported glare and halos.
Conclusions: The visual performance reaches to a stable condition in 1 month of implantation of aspheric multifocal IOL and improved to the level of age-mated normal patients. Also patients were satisfied with their quality of vision, however, intermediate VA, glare and halos were reported as complications.
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KEYWORD
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Aspheric multifocal intraocular lens, OSI, MTF cut off, Strehl ratio, Visual acuity, Optical performance
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