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H. Uozato, T. Kawamorita, K. Shimizu, K. Kamiya; Optical Quality Analysis of Refractive Multifocal Intraocular Lenses in vitro. Invest. Ophthalmol. Vis. Sci. 2009;50(13):5617.
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© ARVO (1962-2015); The Authors (2016-present)
To investigate the modulation transfer functions (MTF) of two refractive multifocal intraocular lenses (IOLs).
The multifocal IOLs ReZoom (AMO) and Array (Allergan) were evaluated using the OPAL Vector system (Image Science) and a model eye with a variable aperture (2.1-5.5 mm). MTFs were evaluated at distant, near, and intermediate (-1.5 D defocus) focus lengths.
The ReZoom distant focus MTF for a 5.1 mm effective diameter was higher than that of the Array. At intermediate distance, the ReZoom showed a slight increase compared with the Array. The near focus MTF in the ReZoom began to increase at an effective diameter of 2.1 mm and remained constant for diameters > 3.45 mm.
ReZoom gave better image quality than the Array, particularly at a distant focus. To enhance near vision with the ReZoom, the desirable real pupil diameter should be at least 3.45 mm.
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