Transfer Effects of Training-Induced Visual Field Recovery in Patients With Chronic Stroke

Bergsma, Douwe; Elshout, Joris A.; Wildt, G. J. van der; Berg, Albert van den

doi:10.1310/tsr1903-212

Cited by 23 publications

(28 citation statements)

References 29 publications

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“…Bergsma and colleagues also reported transfer from RFT detection training to flicker fusion, color, form and reading ability in 3 patients following training (Bergsma and van der Wildt 2008). In a follow-up study, 9/12 subjects showed an improvement in reading speed, while 3/7 showed an improvement in color and shape discrimination, though one of these 3 subjects exhibited poor fixation (Bergsma and others 2012). In short, perimetry-like detection training appears to transfer to untrained stimuli, but the reason why it transfers for some CB patients and not others remains unclear.…”

Section: How Normal Is Recovered Vision?mentioning

confidence: 98%

“…Figure 2B–I shows the wide range of stimuli and tasks used in these studies. In another important distinction from VRT, most of these groups presented targets fully in the blind field rather than straddling the border between intact and impaired vision, and a significant proportion (Bergsma and others 2012; Bergsma and van der Wildt 2010; Das and others 2014; Huxlin and others 2009; Sahraie and others 2010; Sahraie and others 2013; Sahraie and others 2006) used infrared eye trackers to enforce fixation during testing. The key principle behind this approach was that for visual restitution therapy to work, one had to force the blind field ( not portions of the intact visual field ) to process stimuli using spared cortical circuits that functioned abnormally post-lesion.…”

Section: Can a V1-damaged Visual System Be Retrained To See?mentioning

confidence: 99%

“…Over time, such training gradually decreased the size of the blind field, as measured by Goldmann perimetry (Bergsma and others 2012; Bergsma and van der Wildt 2008; Bergsma and van der Wildt 2010), while also improving reading speed in most of the patients, and color/shape perception in just under half the patients tested (Bergsma and others 2012). …”

Section: Can a V1-damaged Visual System Be Retrained To See?mentioning

confidence: 99%

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Relearning to See in Cortical Blindness

2015

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The incidence of cortically induced blindness (CB) is increasing as our population ages. The major cause of CB is stroke affecting the primary visual cortex. While the impact of this form of vision loss is devastating to quality of life, the development of principled, effective rehabilitation strategies for this condition lags far behind those used to treat motor stroke victims. Here we summarize recent developments in the still emerging field of visual restitution therapy, and compare the relative effectiveness of different approaches. We also draw insights into the properties of recovered vision, its limitations and likely neural substrates. We hope that these insights will guide future research and bring us closer to the goal of providing much-needed rehabilitation solutions for this patient population.

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Section: How Normal Is Recovered Vision?mentioning

confidence: 98%

Section: Can a V1-damaged Visual System Be Retrained To See?mentioning

confidence: 99%

Section: Can a V1-damaged Visual System Be Retrained To See?mentioning

confidence: 99%

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Relearning to See in Cortical Blindness

2015

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“…A number of studies reported expansion of the visual field following treatment (Bergsma, Elshout, van der Wildt, & van den Berg, 2012; Mueller et al., 2007; Romano et al., 2008). However, for studies in which fixation was controlled and assessed using the scanning laser ophthalmoscope, little or no change in the visual field area was noted (Marshall, Chmayssani, O'Brien, Handy, & Greenstein, 2010; Reinhard et al., 2005; Sabel et al., 2004).…”

Section: Interventionsmentioning

confidence: 99%

“…However, for studies in which fixation was controlled and assessed using the scanning laser ophthalmoscope, little or no change in the visual field area was noted (Marshall, Chmayssani, O'Brien, Handy, & Greenstein, 2010; Reinhard et al., 2005; Sabel et al., 2004). Despite little or no improvement in the visual field area, patients reported an improvement in quality of life and ADL, such as mobility and reading (Bergsma et al., 2012; Gall & Sabel, 2012; Mueller et al., 2007; Plow, Obretenova, Fregni, Pascual‐Leone, & Merabet, 2012; Sabel et al., 2004). Although not statistically significant, reports of visual hallucination or less dense areas of visual field loss were also more likely to show improvement (Poggel et al., 2007; Sabel et al., 2013).…”

Section: Interventionsmentioning

confidence: 99%

The treatment methods for post‐stroke visual impairment: A systematic review

2017

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AimTo provide a systematic overview of interventions for stroke related visual impairments.MethodA systematic review of the literature was conducted including randomized controlled trials, controlled trials, cohort studies, observational studies, systematic reviews, and retrospective medical note reviews. All languages were included and translation obtained. This review covers adult participants (aged 18 years or over) diagnosed with a visual impairment as a direct cause of a stroke. Studies which included mixed populations were included if over 50% of the participants had a diagnosis of stroke and were discussed separately. We searched scholarly online resources and hand searched articles and registers of published, unpublished, and ongoing trials. Search terms included a variety of MESH terms and alternatives in relation to stroke and visual conditions. Article selection was performed by two authors independently. Data were extracted by one author and verified by a second. The quality of the evidence and risk of bias was assessed using appropriate tools dependant on the type of article.ResultsForty‐nine articles (4142 subjects) were included in the review, including an overview of four Cochrane systematic reviews. Interventions appraised included those for visual field loss, ocular motility deficits, reduced central vision, and visual perceptual deficits.ConclusionFurther high quality randomized controlled trials are required to determine the effectiveness of interventions for treating post‐stroke visual impairments. For interventions which are used in practice but do not yet have an evidence base in the literature, it is imperative that these treatments be addressed and evaluated in future studies.

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Reading Difficulties in Individuals with Homonymous Visual Field Defects: A Systematic Review of Reported Interventions

Tol,

de Haan,

Postuma

et al. 2024

Neuropsychol Rev

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Reading difficulties are amongst the most commonly reported problems in individuals with homonymous visual field defects (HVFDs). To be able to provide guidance for healthcare professionals considering offering reading training, researchers in this field and interested individuals with HVFDs, this systematic review aims to (1) provide an overview of the contextual and intervention characteristics of all published HVFD interventions and (2) generate insights into the different reading outcome measures that these studies adopted. A search on PsycINFO, MEDLINE and Web of Science was conducted up to February 2, 2023. All intervention studies for HVFD in which reading was measured were included. Data was collected about the intervention type, session duration, number of sessions, the intensity, duration, circumstance of the interventions, country in which the intervention was studied and reading measures. Sixty records are included, describing 70 interventions in total of which 21 are specifically reading interventions. Overall, adjusted saccadic behaviour interventions occur most in the literature. A wide range within all intervention characteristics was observed. Forty-nine records reported task-performance reading measures, and 33 records reported self-reported reading measures. The majority of task-performance measures are based on self-developed paragraph reading tasks with a time-based outcome measure (e.g. words per minute). Future research could benefit from making use of validated reading tests, approaching the measurement of reading mixed-methods and providing participants the possibility to supply outcomes relevant to them.

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Transfer Effects of Training-Induced Visual Field Recovery in Patients With Chronic Stroke

Abstract: White stimulus training-induced VFE can lead to improved color and shape perception and to increased reading speed in and beyond the pretraining transition zone if ECSG is sufficiently large. The latter depends on the eccentricity of the VFE.

Cited by 23 publications

References 29 publications

Relearning to See in Cortical Blindness

Relearning to See in Cortical Blindness

The treatment methods for post‐stroke visual impairment: A systematic review

Reading Difficulties in Individuals with Homonymous Visual Field Defects: A Systematic Review of Reported Interventions

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