Functional Magnetic Resonance Imaging to Assess the Neurobehavioral Impact of Dysphotopsia with Multifocal Intraocular Lenses

Rosa, Andreia; Miranda, Ângela; Patrício, Miguel; McAlinden, Colm; Silva, Fátima; Murta, Joaquim

doi:10.1016/j.ophtha.2017.03.033

Cited by 48 publications

(41 citation statements)

References 40 publications

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“…It is interesting to note that, in another non‐spectacle form of presbyopia correction, multifocal intraocular lenses, an increased activity of cortical areas dedicated to attention (fronto‐parietal circuits) was found during the beginning of the neuroadaptation process to this type of device (Rosa et al . ).…”

Section: Discussionmentioning

confidence: 97%

Immediate cortical adaptation in visual and non‐visual areas functions induced by monovision

Zeri

Berchicci

Naroo

et al. 2017

The Journal of Physiology

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A common and often successful option to correct presbyopia with contact lenses is monovision. This is an unbalanced correction across the two eyes where one eye is corrected for far vision and the other eye is corrected for near vision. Monovision is therefore a form of acquired anisometropia that causes a superimposition of an in-focus image with a blurred image. In spite of this visual anisometropia, monovision has been successfully used for many decadesl however the brain mechanism supporting monovision is not well understood. The present study aimed to measure the visual evoked potentials with a high-density electrode array (64-channel) in a group of presbyopes and to provide a detailed spatiotemporal analysis of the cortical activity after a short period of adaptation to monovision with contact lenses. When compared with a balanced eye near correction, monovision produced both a clear reduction of the earliest visual evoked potential components, the C1 and the N1, and an amplitude increase of the P1 and pP1. These results indicate that the unilateral blurring induced by wearing monovision contact lenses reduces feed-forward activity in the primary visual area and feedback activity in extrastriate areas (C1 and N1 reduction). Interestingly, other brain activities in both extrastriate visual areas (the P1 component) and in the anterior insula (the pP1 component) appear to compensate for this dysfunction, increasing their activity during monovision. These changes confirm the presence of fluid brain adaptation in visual and non-visual areas during monocular interferences.

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Section: Discussionmentioning

confidence: 97%

Immediate cortical adaptation in visual and non‐visual areas functions induced by monovision

Zeri

Berchicci

Naroo

et al. 2017

The Journal of Physiology

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“…The image overlap of observed retinal objects in patients with implanted diffractive intraocular lenses distorts the processes of image analysis within the visual cortex. Studies using functional magnetic resonance imaging have demonstrated that, unlike in patients with monofocal lenses, cortical centers in patients with implanted multifocal lenses are activated under poor lighting conditions; among other things, these regions are responsible for task planning and problem solving [18,20]. Thanks to the process of neuroadaptation, in the majority of patients, these problems decrease with the time that has elapsed since surgery [13-14, 19, 21].…”

Section: Discussionmentioning

confidence: 99%

Cognitive functions in patieCognitive functions in patients after cataract phacoemulsification and implantation of multifocal and monofocal intraocular lnts after cataract phacoemulsification and implantation of multifocal and monofocal intraocular lenses

Gębska-Tołoczko

Kałuz̊ny

Żaroń

et al. 2018

Medical Research Journal

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Introduction: The study has to determine whether implantation of diffractive multifocal lenses during cataract phacoemulsification causes distortion of the cognitive aspects of processing perceptual information. Material and methods: 25 patients who underwent cataract phacoemulsification with the implantation of diffractive multifocal lens Acrysof Restor SN6AD1 in both eyes (multifocal group) and 26 patients with the implantation of monofocal intraocular lens Acrysof IQ SN60WF in both eyes (monofocal group) were enrolled. All patients underwent ophthalmic examination and cognitive function-Trial Making Test (Part A and Part B) and Stroop Test (Stroop Test 1 and Stroop Test 2) tests at least 6 months after cataract surgery of the other eye. Results: Mean patient age and visual acuity with correction for near and far vision did not differ between groups.

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“…A similar conclusion was reached by authors using functional magnetic resonance imaging to study presbyopic patients who had surgical implantation of multifocal intra‐ocular lenses during cataract surgery (Rosa et al . ). This type of lens also creates a sort of rivalry between distance and near images.…”

mentioning

confidence: 97%

“…Patients with recently implanted multifocal lenses also displayed a reduced signal in the primary visual cortex, especially under glare, and significant activation of the attention network (frontal, middle frontal, parietal–frontal areas) (Rosa et al . ).…”

mentioning

confidence: 97%

Presbyopia monovision correction and cortical adaptation

Rosa

2017

The Journal of Physiology

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Functional Magnetic Resonance Imaging to Assess the Neurobehavioral Impact of Dysphotopsia with Multifocal Intraocular Lenses

Cited by 48 publications

References 40 publications

Immediate cortical adaptation in visual and non‐visual areas functions induced by monovision

Immediate cortical adaptation in visual and non‐visual areas functions induced by monovision

Cognitive functions in patieCognitive functions in patients after cataract phacoemulsification and implantation of multifocal and monofocal intraocular lnts after cataract phacoemulsification and implantation of multifocal and monofocal intraocular lenses

Presbyopia monovision correction and cortical adaptation

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