Disk halo size measured in individuals with monofocal versus diffractive multifocal intraocular lenses



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Puell Marín, María Cinta and Perez Carrasco, Maria Jesus and Hurtado-Ceña, Francisco Javier and Álvarez-Rementería Fernández, Laureano (2015) Disk halo size measured in individuals with monofocal versus diffractive multifocal intraocular lenses. Journal of cataract and refractive surgery, 41 (11). pp. 2417-2423. ISSN 1873-4502

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Official URL: http://dx.doi.org/10.1016/j.jcrs.2015.04.030


PURPOSE: To compare disk halo size in response to a glare source in eyes with an aspheric apodized diffractive multifocal intraocular lens (IOL) or aspheric monofocal IOL.
SETTING: Rementeria Ophthalmological Clinic, Madrid, Spain.
DESIGN: Prospective randomized masked study.
METHOD: Halo radius was measured using a vision monitor (MonCv3) with low-luminance optotypes in eyes that had cataract surgery and bilateral implantion of an Acrysof Restor SN6AD1 multifocal IOL or Acrysof IQ monofocal IOL 6 to 9 months previously. The visual angle subtended by the disk halo radius was calculated in minutes of arc (arcmin). Patient complaints of halo disturbances were recorded. Monocular uncorrected distance visual acutity (UDVA) and corrected distance visual acuity (CDVA) were measured using high-contrast (96%) and low-contrast (10%) logMAR letter charts.
RESULTS: The study comprised 39 eyes of 39 subjects (aged 70 to 80 years); 21 eyes had a multifocal IOL and 18 eyes a monofocal IOL. The mean halo radius was 35 arcmin larger in the multifocal IOL group than the monofocal group (P<.05). Greater halo effects were reported in the multifocal IOL group (P<.05). The mean monocular high-contrast UDVA and low-contrast UDVA did not vary significantly between groups, whereas the mean monocular high-contrast CDVA and low-contrast CDVA were significantly worse at 0.12 logMAR and 0.13 logMAR in the multifocal than in the monofocal IOL group, respectively (P <.01). A significant positive correlation was detected by multiple linear regression between the halo radius and low-contrast UDVA in the multifocal IOL group (r = 0.72, P<.001).
CONCLUSIONS: The diffractive multifocal IOL gave rise to a larger disk halo size, which was correlated with a worse low-contrast UDVA.

Item Type:Article
Uncontrolled Keywords:Bilateral implantatios ; Contrast sensitivity ; Optical-performance ; Retinal straylight; Visual outcomes; Addition power ; Aberrations
Subjects:Sciences > Physics > Optics
Medical sciences > Optics > Optometry
Medical sciences > Optics > Visual perception
ID Code:38008
Deposited On:06 Jul 2016 07:08
Last Modified:06 Jul 2016 08:29

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